ICanWorkThisThing.com

AOI Communications
AT-600 VHF/UHF FM DUAL BANDER
USER'S MANUAL

TABLE OF CONTENTS
1 Preparation...............................................I
1-1 Features................................................2
1-2 Accessories.............................................3
1-3 Getting Acquainted .....................................3
1-4 Manual Conventions .....................................8
1-5 Using the AT-600's Set Menu ............................9
1-6 A Quick Look at The Display ........................... 11
2 Basic Operations ........................................ 12
2-1 Turning Power On/Off................................... 12
2-2 Adjusting Volume and Squelch........................... 12
2-3 Using SQL OFF ......................................... 12
2-4 Selecting Main Band ................................... 12
2-5 Selecting Frequency ................................... 13
2-6 Transmitting .......................................... 13
2-7 Inhibiting Transmissions............................... 14
2-8 Selecting Output Power ............................... 14
2-9 Changing Frequency Step ............................... 14
2-10 Changing Frequency Step in 1 OOKHz, I MHz or 1 OMHz... 14
2-11 Using Key Lock ....................................... 15
2-12 Using Selector Lock and Key Lock ..................... 15
2-13 Single Band Operation ................................ 15
2-14 Using Display Light .................................. 16
2-15 Testing Display Window ............................... 16
2-16 Resetting the AT-600 .................................
3 Memory Function .........................................
3-1 Storing Frequencies into Memory .......................
3-2 Recalling Memory ......................................
3-3 Clearing a Memory......................................
3-4 Changing Stored Memories...............................
3-5 Protecting Memory .....................................
3-6 Storing/Changing Channel ID ...........................
3-7 Call Channel ..........................................
3-8 Changing Call Frequency ...............................
3-9 Changing CALL Frequency Temporarily....................
4 Scanning ................................................
4-1 1 MHz Scan ............................................
4-2 Band Scan ............................................
4-3 Program Scan ..........................................
4-4 Memory Scan ...........................................
4-5 Specific Memory Scan ..................................
4-6 Memory Block Scan .....................................
4-7 Scan Specific Memory Under Memory Block Scan...........
4-8 Tone Squelch Frequency Scan ...........................
4-9 Selecting Scan Resume Type.............................
5 Dual Watch ..............................................
5-1 Memory MOO Dual Watch .................................
5-2 Any Memory Mxx Dual Watch ............................. 27
5-3 Call Channel Dual Watch ............................... 27
5-4 Memory Sequence Dual Watch............................. 27
5-5 Changing Dual Watch Speed ............................. 28
6 Operating Through Repeaters.............................. 29
6-1 Setting Offest Direction .............................. 29
6-2 Changing Offset Frequency ............................. 30
6-3 Reversing Transmission and Reception Frequency ........ 30
6-4 Cross-Band Repeater Operations ........................ 30
6-5 Setting 2-Second Cross-Band Repeater Delay ............ 31
7 DTMF Features ........................................... 32
7-1 Manually Transmitting DTMF Codes....................... 32
7-2 Storing DTMF Sequences ................................ 32
7-3 Clearing DTMF Memory .................................. 33
7-4 Transmit DTMF Sequence from Memory..................... 33
7-5 Changing DTMF Transmitting Speed ...................... 34
7-6 Using DTMF Decode Function ............................ 34
7-7 DTMF Paging ........................................... 35
7-8 Setting Personal or Group Code......................... 35
7-9 Paging from Memory..................................... 35
7-10 Setting Page Squelch ................................. 36
7-11 Setting Page Delay.................................... 36
7-12 Changing Page Rings...................................
7-13 Using DTMF Code Squelch ..............................
8 CTCSS Features ..........................................
8-1 Using Tone Encode .....................................
8-2 Using Tone Squelch ....................................
8-3 Setting CTCSS Tone ...................................
9 Additional Features ...................................
9-1 Setting AM Reception Mode ............................
9-2 Setting Auto Power Off ...............................
9-3 Setting Reception Attenuation(ATT).....................
9-4 Setting Auto AM Mode ..................................
9-5 Setting Auto Power On Function.........................
9-7 Cloning................................................
9-8 Full Duplex Operation..................................
9-9 Setting I KHz Digit Option ............................
9-10 Setting Power On Message .............................
9-11 Battery Save .........................................
9-12 Selecting Internal/External Speaker...................
9-13 Setting Time-Out Timer (TO.T) ........................
9-14 Battery Voltage Reading ..............................
9-15 1750Hz Tone Burst ....................................
10 Specifications .........................................

PREPARATION
Preparation Precautions:
1. To prevent permanent power loss, do not charge the battery pack in an area where the temperature is below about 50C (400F).
2. If you install an outdoor antenna, please follow all cautions and warnings that come with the antenna.
3. Do not transmit with high output power for too long periods. The transceiver maybe overheat.
4. The supply voltage must be between 5.5V and 16.OV to avoid damaging the transceiver.
5. Never charge the battery pack with a charger other
than the one supplied to avoid permanently damaging the battery pack.
6. Rechargeable NiCd battery can be a hazard to the
environment. It must be recycled or disposed of safely at the end of the
battery's useful life.
7. Do not place the transceiver near the heating appliances or expose it to long periods of direct sunlight.
8. Do not place the transceiver in excessively humid or dusty areas.
9. Do not disassemble the transceiver and modify it.
Changes or modifications to this equipment not
expressly approved by ADI could void the user's authorization to operate
this equipment.
This equipment complies with part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) This equipment may not
cause harmful interference, and (2) this equipment must accept any
interference received, including interference that may cause undesired
operation.

1 -1 Features The AT-600 has the following great features: *Dual Band
Operation-Capable of simultaneous transmit and receive on both 2-meter
VHF and 70-cm UHF bands and receives in the ranges
130.0-172.OMHz, 350.0- 399.995MHz,
400.0-470.OMHz, and 900.0-985.OMHz.
* Low battery alert -To alert the AT-600's user to
recharge the battery pack when battery icon appears on the display. If
the user continues to use the battery after some time, the AT-600 will
automatically shut down 80 seconds after flashing "Battery Low" appears.
* Large backlit dot matrix LCD with illuminated keypad
-All operating information for both VHF and UHF bands are clearly
displayed, and allows you to turn on the lamp so you can see the display
and use the keypad anywhere. *120/200 non-volatile memory
channels-Built-in memory allows you to store up to 60/100 channels with
frequency in both VHF and UHF bands. When you select "Memory SET 120" in
the Set Menu mode, memories can be tagged with a 6-character ID name,
which Can be displayed instead of the frequency.
Under the circumstances, memory capaci4 reduced to 110 with 55 memories
per band.
* Switchable FM and AM reception- Allows y,
switch between FM and AM reception on thi band so you can clearly hear
both amateur; aircraft transmissions.
* Power on message display- Allows you to si
6-character power on message that appears time you turn on your AT-600.
* New Set Menu design- Allows you to acces,,
system with full alphanumeric display of fur and settings. You can
browse through a sumi current operational status.
* Clone function- Both wireless cloning and wii
cloning allows you to copy all settings and mE contents from one AT-600
to the other AT-600
* DTMF message paging and decoding- Allow.,
store up to 1 0-memory, 15-digit DTM F autodi, autopatch operation and
decode DTMF sequE up to 15 digits.

1-2 Accessories
I
P**
Antenna
MX133AO03
1
Belt Clip
MX188AO02
1
Hand String
NX002AO10
NiCd Battery Pack
BA072RI67
1
Battery Charger General U.S.A./Canada Europe(except U. K.) U. K.
KM043X1 28L
KM043X1 28L KM099XO06L KM099XO1 9L
I User's Manual I
NX1 68AO08 I
1
1-3 Getting Acquainted (1) Power Switch
Press and hold this key for longer than 0.8 seconds will turn the unit
on or off. (2) VHF Band Volume Control Knob Turning the control
clockwise will increase the volume level for VHF band. (3) VHF Band
Squelch Control Knob The squelch control is fully counterclockwise by
factory default. Rotating this control clockwise and stop immediately
when the noise disappears. If the squelch control knob is rotated fully
clockwise, the .receiving sensitivity will degrade and weak signal will
be blocked. (4) UHF Band Volume Control Knob As per (2). (5) UHF Band
Squelch Control Knob As per (3). (6) Selector Control Knob This control
knob has different functions depending on the mode and programmed
personality of the unit. For example, in VFO state, it is used to tune
the frequency In memory mode, it can be used to select the memory
channel. Further details on this

control are given in the relevant sections of this manual. (7) Lamp
Press the [LAMP] key will turn on the display lamp for 5 seconds. During
5 seconds, press [LAMP] again will switch the display lamp off. Used in
conjunction with the [FUNq key to turn the display lamp on/off steadily
(8) SCIL OFF Press the [SQL OFF] key will turn off the squelch and the
hissing noise will be heard if no signal comes in air. (9) Microphone
(10) Battery Release
To remove the battery pack, push this clip up towards the top of the
unit and then slide the battery pack towards the left of the unit. To
replace the battery pack, slide the battery pack along the battery rail
until a click is heard. (11) External DC Jack A DC power cord with
appropriate polarity and voltage rating(<1 6V) can be used to operate
your unit.
(12) Push To Talk( PTT )
To transmit, press this switch while holding the AT-600 about 5cm to 7cm
from your mouth with the microphone facing you. Speak in a clear voice
at normal speech level. The LED(l 4), should glow red while
transmitting. (13) Function Switch(FUNC) Used in conjunction with 1, 6,
7, 9 above. (14) LED Light red during transmission and light green
during reception. Off when no signal comes in air. (15) External
Speaker/Microphone Jack Provide the AT-600's user with using an external
speaker and microphone. If an external speaker is used, the audio from
the VHF band and the UHF band can be split between the internal and
external speaker. (16) Antenna Port( BNC type) The antenna supplied with
your AT-600 is properly tuned to the UHF/VHF amateur band frequencies
and is attached to the AT-600 via a BNC connector. The AT-600 should
never be operated without the correct antenna fitted.
5

(17) Battery Charge Input Jack. (18). Alphanumeric Keypad The 16-key
alphanumeric keypad is used for various functions, depending on the mode
of operation. The details is as follows:
[KEY)
Press [KEY] to:
Press [KEY] during DTMF memory store to:
Press [FUNCI + [KEY] to:
Press [PTT to:
[ A CALL SFT ]
Recall the Call frequenc
Enter DTMF "A"
Enter text I D or power on message
Transmit D "All
[ B MAIN MONO I
Select the main band
Enter DTMF "B"
Turn off the sub-band
Transmit D "B"
[ C V/M ENT]
Toggle VFO and memorV modes
Enter DTMF "C"
Enter a setting
Transmit D*
11C11
[D CL PS I
Clear an entry
Enter DTMF "D"
Start scanning
Transmit D* "D"
[I POI
Enter a digit in a frequenc
Enter DTM F " 1 "
Change the power of transmission
Transmit D:
11111
( 2 DUAL I
Enter a digit in a frequency
Enter DTMF "2"
Start the dual watch
Transmit DI "211
[3 PL. I
Enter a digit in a frequen y
Enter DTMF "3"
Lock the [ PTT function
Transmit DI
11311
[ 4 DTMF M I
Enter a digit in a frequency
Enter DTMF "4"
Access the DTMF memory
Transmit DT
11411
[5CODEJ
Enter a digit in a frequency
Enter DTMF "5"
1
Access the paging code memory
Transmit DT
11511
6 K.L.
Enter a digit in a frequency I
Enter DTMF "6" 1
Lo k the keypad
Transmit DT
11611

[ 7 TSQ ]
Enter a digit in a frequency
Enter DTMF 7"
Set the tone squelch feature
Transmit DTMF
11711
[ 8 RPT ]
Enter a digit in a frequency
Enter DTMF "8"
Set the offset direction
Transmit DTMF
11811
[ 9 REV I
Enter a digit in a frequency
Enter DTMF "9"
Reverse the offset
Transmit DTMF
11911
[0 SET/SB I
Enter a digit in a frequency
Enter DTMF "0"
Enter the Set Menu mode. If scanning, change the scan resume option.
Transmit DTMF
11011
[ - MS MS.M ]
Start memory scan
Enter DTMF `Y'
Toggle the specific memory scan for memories
Transmit DTMF
11*11
ID PAG
In memory mode, toggle the ID and the frequency
Enter DTMF
Set the DTMF page mode or the DTMF code squelch mode
Transmit DTMF

1-4 Manual Conventions Each of the AT-600's buttons has multiple
functions depending upon which mode the AT-600 is in or on what other
buttons you are pressing. To make this manual easier to read and use, we
refer to each button by the name appropriate to the function you are
performing and use boldface character to highlight the function. For
example, when button marked [C V/M ENT] is referred to as: [C V/M ENT],
when transmitting DTMF C. [C V/M ENT], when switching between the VFO
and memory modes. [C V/M ENT], when completing an entry. Many functions
are accessed by holding down the FUNC key, then pressing another key
simultaneously. In this manual, this is indicated as [FUNq+[KEY]. For
example, to store a memory channel operation, you press [FUNq+[c V/M
ENT], ENT uses boldface character.
Key entry conventions
Instruction
Descripti
Press (KEY)
Press and releas (lq
Press (FUNC) + (KEY)
Hold down (FUNC)ley, #
Press C FUNC)+ (KEY)+ (PWR )
Press and hold both (FU O(M dam, tw sMld
, Turn CH
notate selector control

1-5 Using the AT-600's Set Menu Many of the functions in the AT-600 are
configured or programmed by means of a set menu system. This system makes it
possible to reduce the keys and controls without eliminating any important
features. There are 29 different set menus or more which you can choose.
To enter the set menu mode, just press [FUNq + [0 SET/SB].Once you enter
the set menu mode, you can turn CH (Selector Control) to select one of
the menus you'd like to change. The configuration structure is designed
in alphabetic order to help user quickly find the desired menu. Each
time you want to set the status of one menu, just press [FUNq switch and
then turn CH to choose different selections available. You can also
press [# ID PAG] or [0 SET/SB], key to set the status of one menu in the
set menu mode. To stored the selected value and exit the set menu mode,
press [FUNq + [0 SET/SB] again or just press [D CL PS] key.
SET MENU ITEMS LIST:
AM Mode
On/(Off)
Set the AM reception mode.
APO
On/(Oft)
Set auto power off.
ATT
On/(Off)
With or without reception attenuation.
AUTO AM
On/(Off)
Auto AM function
AUTO RPT Sft On/(OM
Automatically set shift frerquency in VHF band and UHF band
AUTO PWR ON
On/(Off)
Automatically turn on AT-600.
BEEP
On/(Off)
Set the entry beep sound on/off.
Clone (Off)
DTMF clone mode.
CTCSS (110.9)
Change the tone frequency. 38 CTCSS tones can be selected.
Decode DTMF (Oft)
Decode DTMF tones up to 15 digits.
DTMFTX Spd (nor)
Change the sending time interval of the DTMF code.
Dul WtCh Spd (nor)
Change the dual watch speed.
Duplex
On/(Oft)
Full duplex mode.
Function Stp (0.1)
Change the frequency in 0. 1, 1, 10 MHz step while holding down (FUNC
)switch.
1 K Digit L- (On)/Off
Entry of 1 KHz digit while using key pad to enter VFO frequency.
9

Memory SET (120)
Switch 120-set and 200-set of memory
MEM Prot
On/(Off)
Set the memory protect flag.
Offset (0.600)
Change the offset frequency
PAGE-IDLY (450)
Set the paging mode delay time. 450 or 750 ms can be selected.
PageRing (5)
Change the number of rings in paging. 5, 1, or off can be selected.
PAGE SOL
On/(Off)
Wait in the paging mode without voice.
PwrOnMsg (AT- 6 0 0)
Let the user program his own Power On Message.
IRPT-DLY
Onl(Off)
Set the delay time for cross-band repeater transmission.
SAVE (Off)
Change the battery save time from off, 0.5, 1.0 . .......
10 seconds.
Selector Lock Onl(Off)
Set the selector for use in the key lock mode.
Speaker Mode (11)
Select external/internal speaker. I
Step (5.0)
Change the frequency step,
TOT (Off)
Set the time-out timer.
Voltage
XXX
Let the user read the current voltage of battery pack.
XBd-RPTR (Off)
Set the cross-band repeater mode. Both bands must be displayed to access
this item.
( ) stands for factory default.

1-6 A Quick Look at the Display The dot matrix LCD with backlit provides
the AT-600's user with the following indications:
I I

BASIC OPERATION
2 Basic Operations
2-1 Turning Power On/Off
1. Press (PWRI for around 1 second to turn ON
the AT-600.
2. Press [PWR] again for around 1 second to turn
OFF the AT-600.
AD I AT-600
2-2 Adjusting Volume and Squelch
1. Volume and squelch are combined on one
control for each band. The inner part is volume (VOL) and the outer part
is squelch(SQL).
2. The left control is for VHF band and the right
control is for IJHF band.
3. Turn VOL control clockwise to increase the
volume and counterclockwise to decrease it.
4. Turn SQL control clockwise to adjust the squelch
level immediately when the noise disappears
5. The factory default setting for volume and
squelch control is at its counterclockwise position.
2-3 Using SOL OFF * In two situations you might use the
key: (1) If you are using paging, code,. tone squelch, you might not
hear a trai the current frequency even if the squel set at its
counterclockwise position. (2) like to change the squelch level which !
2-2, you might not hear a weak signal c frequency. To temporarily turn
off squelch, so you i
transmissions on the frequency.
1. Press [SQL OFF] to turn off squelch.
2. Release [SQL OFF], the AT-600 retur, squelch.
2-4 Selecting Main Band
0 The main band is indicated by "MAIN" the display. The main band is the
band % can receive and transmit. Each time you [B MAIN MONO] key, "MAIN
" icon shifts between VHF and UHF band in display. changing frequencies,
memories, tones,.. remember "MAIN" should first be set to ri band.
12

1. Press [B MAIN MONO] to select the main band.
2. Press [B MAIN MONO] again to confirm that the
main band has been switched.
445.000
145.000
445.000
145.000
2-5 Selecting Frequency
N Using channel selector
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select VFO mode.
3. Turn the channel selector to select a frequency.
Clockwise rotation increases the frequency one frequency step at a time.
Counterclockwise rotation decreases the frequency one frequency step at
a time.
4. By factory default, the frequency step is 1 OKHz
in VHF band and UHF band.
N Using keypad
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select VFO mode.
3. Enter the desired frequency using the numeric
keys starting from 1 OOMHz digit to 1 KHz digit. NOTE: Each time you
press the [C V/M ENT] key, the AT-600 shifts between VFO and memory
mode.
2-6 Transmitting
0 Before transmitting, momentarily press [SQL OFF] to listen for
activity on your channel. Don't interrupt another user.
1. Press [B MAIN MONO] to select the main band.
2. Press the [C V/M ENT] to select VFO mode.
3. Select the frequency as 2-5.
4. Press [ PTT ] on the left top side of the radio and
speak slowly and clearly into the grille area with the microphone grille
about 5cm to 7cm from your mouth.
5. The TX/RX BUSY LED lights red when [ PTT ] is
pressed and remains on during the transmission.
6. Release [ PTT ] to receive when finished
transmitting.
445.000
145.550
1 A

2-7 Inhibiting Transmissions I.Press F+ [3 P.1-1. The PL icon is
displayed.
2.Confirm the transmission is inhibited when [ PTT I is pressed.
3. Repeat step 1 to exit the power lock function.
445.000
145.550
2-8 Selecting Output Power
1. Press [B MAIN MONO] to select the main band.
2. Press [FUNq+[l 130]. Each time these keys are
pressed, the transmit output power changes as M* U-@,H. The factory
default is medium power(M).
445.000
145,550
4450-9-0-0
145.550
2-9 Changing Frequency Step
0 The factory default is I OKHz for both VHF band
and UHF band.
1. Press [FUNq+[o SET/SB] to enter the Set Menu
mode.
2. Turn CH to the menu " Step 10.0
3. Hold down [FUNCI and turn CH to
frequency step. Eight frequency ste selected. You can also press [# ID F
[0 SET/SB] to change the setting.
4. Repeat step I or press [D CL PSI tc
Menu mode.
S. tep
10.0
2-10 Changing Frequency Step in 1001
I MHz or I OMHz N Changing frequency in 1 OOKHz step
1. Hold down (FUNC I and turn CH. N Changing frequency in 1 MHz or 10 N
1. Press [FUNC]+[O SET/SB] to enter th(
Menu mode.
2. Turn CH to the menu " Function Stp 1
3. Hold down [FUNCI and turn CH to cha
menu to" Function Stp 1.0"or" Functic Stp 10.0 ". You can also press [#
I D PA [0 SET/SB] to change the setting.
14

4. Repeat step 1 or press [D CL PS] to exit the Set Menu mode.
5. To change the frequency in 1 MHz or 1 OMHz step,
hold down [FUNq and turn CH.
Function M Stp 0. 1
2-11 Using Key Lock *Sometimes you may want to lock the AT-600's
keypad so you do not accidentally change settings.
1. Press [FUNq+[6 K.L.].
2. The key icon is shown on the right top of the display.
3. Repeat step 1 to exit the key lock function.
445.000
145.550
a
2-12 Using Selector Lock and Key Lock
0 Sometimes you may want to lock the AT-600's channel selector control
and keypad simultaneously, perform the following operation procedures.
1. Press [FUNq+[o SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "Selector Lock Off
3. Hold down [FUNC] and turn CH to change the
menu "Selector Lock On". You can also press [# ID PAG] or [0 SET/Sl3] to
change the setting.
4. Repeat step 1 or press [D CIL PS] to exit the Set
Menu mode.
5. Press [FUNq+[6 K.L.].
6. Perform the reverse order to unlock the channel
selector and keypad.
Selector M Lock Off
Selector M Loc k On
445.000
145.550
1!@
2-13 Single Band Operation *Normally, the AT-600 monitors both UHF band
and VHF band at the same time. To turn off the subband,

so the AT-600 only monitors the main band.
1. Press (B MAIN MONO] to select the main band.
2. Press [FUNq+[B MAIN MONO].
3. The sub-band is turned off and the display only
shows the main band
4. Press [B MAIN MONO] to return the dual band
mode.
445.000
2-14 Using Display Light *You can turn on the display lamp for 5 seconds
or turn it on so it stays on .
1. Press [LAMP] to turn on the display lamp for 5
seconds.
2. Press [FUNq+[LAMP] to turn on the display lamp so it stays on.
3. Press [FUNq+[LAMPI again to turn off the display lamp.
2-15 Testing Display Window
1. Press [PWR] for around 1 second to turn off
the AT-600.
2. Press [PWR]+[3 RLJ.
3. Release (PWRI and press P RLJ
display keeps on.
4. Release [3 P.L.] and return to the r
operation mode. NOTE: This is for test purpose only
M8111111
We
go BS
SOS M
2-16 Resetting the AT-600
0 If the AT-600 seems to be malfunctior
these steps to reset it.
1. Press (PWR] for around I second t
AT-600.
2. Press [FUNq+[D CIL PS]+[PWR] to
AT-600. The AT-600 displays "RESET? Press C".
3. Press C to confirm the reset or pres@
to cancel. CAUTION! This erases all data in mE
16
RESET? Press C

MEMORY FUNCTION
3 Memory Function
Besides two Calling channels, the AT-600 allows you to store up to
120/200 sets of frequency into memory, with 60/100 memory channels in
each VHF and UHF band. When you select "Memory SET 120" in the Set Menu
mode, memories can be tagged with a
6-character ID name, which can be displayed instead of frequency Under
the circumstances, the memory capacity is reduced to 110 with 55
memories (MOO-M54) in each band. In addition to store frequency and ID
name, each memory can hold repeater mode, offset frequency, paging mode
or code squelch mode, and tone encode mode or tone squelch mode.
3-1 Storing Frequencies into Memory
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the VFO mode.
3. Set the frequency you want to store and set all
other options to your desired settings.
3. Press [FUNq+[c V/M ENT]. Two dashes should
appear to the left of the frequency
4. Use the keypad to enter a two-digit number (from
00 to 55).
5. Confirm "M" and the memory number appear
for one second and returns to the VFO. Note: If you enter an invalid
memory number, the AT-600 sounds a "Bu" tone and memory store is
canceled. Repeat steps 3- 4. If you'd like to store frequency only, you
can store 60 memories.
-445.000 M
145.550
A "B 445. 000
145.550
3-2 Recalling Memory * You can use the selector control or the keypad to
recall stored memory. If you select a memory which has information
stored in it, "M" appears to the left of the memory number and the
AT-600 recalls all stored settings. If you select a memory which has no
information stored in it, "M" doesn't appear.
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the memory mode.
3. Turn CH to select a memory address or use the
keypad to enter a two-digit memory number.
4. Turn CH while holding down the [FUNq key will
change memories 10 at a time.
17

5. Press [C V/M ENT] or [D CL PS] to return to the VFO mode.
6, Press [D CIL PS] sets the current memory
frequency to the VFO frequency.
A Zi Clear?
145.550
A "8 1445. 000
M .145.550
3-3 Clearing a Memory
0 Stored memory can be erased.
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the memory mode.
3. Select a memory to be erased. (See 3-2)
4. Press [FUNq+[c V/M ENT], The AT-600 displays
the memory number and "Clear?". (If a protected memory channel is
selected, the AT-600 sounds a warning tone and WEM Prot" appears for I
second on the display.)
5. Press [FUNq+[c V/M ENT] again, M disappears
and the AT-600 sounds a long beep to signal that the frequency is
erased.
6. To erase another memory, repeat steps 3-5.
7. Press [C V/M ENT] to return to the VFO mode.
*To clear all memory channels.
1. Press [PWR] key again for arounc
turn OFF the AT-600.
2. Press [FUNC]+ [C V/M ENTI+[P
AT-600.
3. Confirm all 120 or 200 memories e
3-4 Changing Stored Memories *The memory frequency can be char
and stored when necessary
1. Press [B MAIN MONO] to select the
2. Press [C V/M ENT] to select the me
3. Select a memory to be changed.
4. Press[ FUNC ]+[ A CALL SFT ],"Wrr
flashing.
5, Turn CH or use the keypad to select a
6. Press [ FUNC ]+ [ C V/M ENT ] to stoi
frequency, or press [D CL PS] to returi previous state.
18

Mi 1445. 000 M
145.550
W 1445. 000
M
1450
3-5 Protecting Memory *This function protects the settings in a memory
so
you do not change or erase them unintentionally.
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the memory mode.
3. Select a memory to be protected.
4. Press [FUNC]+[O SET/SB] to enter the Set Menu
mode.
5. Turn CH to the menu VEM Prot Off
6. Hold down [FUNC] and turn CH to change the
menu to "MEM Prot On ". You can also press [# ID PAG] or [0 SET/SB] to
change the setting.
7. Repeat step 4 or press [D CIL PS] to exit the Set
Menu mode.
8. Try to erase this protected memory to confirm that
the memory protection has been activated.
MEM Prot M
Off
MEM Prot M
On
3-6 Storing/Changing Channel ID *To help you remember each memory
channel easily,
the AT-600 has the ability to store an identification name ( ID) for
each channel. This ID name can be a call sign, repeater name, city,
person's name, etc. The ID name can be formed from the ASCII code table.
You can store up to 55 memories(MOO-M54) with ID name, each ID name can
be 6-characters.
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M EN11 to select the memory mode.
3. Select a memory which you want to assign an ID
name.
4. Press [# ID PAG] to display the current ID. "No Name" should appear
if no ID name is stored.
5. Press [FUNq + [A CALL SIFT1. The I D's first
character flashes. Note: If no ID name has been stored, the default ID
name is"CH-Oxx" where xx is the current memory number.
19

6. Turn CH to select the first character.
7. Hold down [FUNq and turn CH to move the
cursor. You can also press [0 SET/SBJ or [# ID PAG] to move the cursor.
8. Repeat steps 6-7 until you have entered the
desired ID name.
9. Press (FUNq + (C V/M ENIO to store the ID name.
10. Press [FUNq + [A CALL SIFT] or press [D CL PS]
to quit without saving the ID name.
A `8 1 No Name
M
145.550
All -,'GH-000
M
145.550
ASCII code table:
it
f
* I
9
- I
.. I
1
7
: I
B
D
E
F
K
I
j I
K
L
M
N
0
P
Q
R
T
U
V
W
x
y
z
I -

5. Press [A CALL SFT] to store the new call frequency " C " should
appear for about one second and the AT-600 return to the VFO mode.
445.000
145.550
C445.000 M
145.550
3-9 Changing CALL Frequency Temporarily *CALL frequency can be changed
temporarily.
1. Press [B MAIN MONO] to select the main band.
2. Press [A CALL SFT] to access the CALL frequency.
3. Press [FUNq+ [A CALL SIFT1. "C" blinks.
4. Use keypad to enter a new CALL frequency.
5. Press[FUNC] + [C V/M ENIJ to store the new CALL
frequency or press [A CALL SFT] to recall the original CALL frequency
C435.000 M
145.550
7C435.000
M
145.550

SCANNING
4 Scanning *The AT-600's scan features allows you to monitor
several frequencies or memories. The receiver checks each frequency or
memory in a preprogrammed list for activity. If the AT-600 detects a
transmission, it stops scanning so that you can hear the transmission.
The AT-600 has seven different scanning modes that control which
frequencies or memories the AT-600 scans and three scan resume options
that controls how long the AT-600 pauses on a busy channel. The
direction of scan can be changed by turning CH clockwise or
counterclockwise during scanning operation,
4-11 MHz Scan
1. Press [13 MAIN MONO] to select main band.
2. Press (C V/M ENT] to select the VFO mode and
set the starting frequency.
3. To start scanning, press [FUNq+ [D CL PS].
4. To stop scanning, press [D CL PS].
445.000
14 C, :280'
4-2 Band Scan * Band scan function scans the entir
1. Press (B MAIN MONO] to select t
2. Press [A CALL SFT], the CALL fri
3. To start scanning, press [FUNq+
4. To stop scanning, press (D CL PS'
445.000 M C 135. 000
4-3 Program Scan *Program scan function scans a spec . frequencies
ranged by two frequenc
1. Press [B MAIN MONO] to select tht
2. Press (C V/M ENT] to select the VF
set the starting frequency.
3. Press [FUNq+[c V/M ENT) to storrz
frequency in one memory For exam
4. Set the stop frequency and store it ii
memory. For example, M 11.
5. Press [C V/M ENT] to enter the merr
then use the keypad to recall the stai In the above example, key in 1,0.
22

6. Press [FUNC]+[D CL PS]. PS:1 0- appears.
7. Using the keypad to enter the memory that has
the frequency you want to scan to. In the above example, key in 11,11.
8. To stop scanning, press [D CIL PS].
445.000 M A lo 145. 100
445.000 M PS: 10---
4-4 Memory Scan
e Memory scan function scans all the memorized
channels. The AT-600 will skip empty memories. If all the memories are
empty, the AT-600 beeps and does not scan.
1. Press [B MAIN MONO] to select the main band.
2. To start the memory scan, press [* MS MS.M].
3. To stop scanning, press [D CIL PS].
445.000 M
47,10"14 10 0
4-5 Specific Memory Scan
9 Specific memory scan function scans the specific
memorized frequency.
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M EN11 to select the memory mode.
3. Using CH or keypad to select the desired memory.
4. Press [FUNq+[* MS MS.M], * should appear
below the memory number.
5. Repeat steps 3-4 to make more memories with
6. Press [C V/M ENT] to select the VIFO mode.
7. Press [FUNC]+[* MS MS.M], * should appear.
8. Press [* MS MS.M]. The AT-600 scans the
memories with the * mark.
9. To stop scanning, press [ D CIL PS].
10. To cancel the specified memory with * mark, press [FUNq+ [* MS MS.Mj
in the memory mode
445.000 M A io 145. 100
44-5-.000
145.100
445.000 M M'10' *.- 14 5:.: 10 0
23

4-6 Memory Block Scan
9 Memory block scan function scans a group of memory
channels. The AT-600 has six memory blocks of 10 memories each. The
block numbers and the scanning ranges are as follows:
Nurnber
Memory Number
0
MOO-MO9
I
M10-M19
2
M20-M29
3
M30-M39
4
M40-M49
5
M50-M59
1. Press [13 MAIN MONO] to select the main band.
2. To start the memory scan, press [* MS MS. M].
3. Enter a block number from 0 to 5, the AT-600 will
limit the scan to the memory block you select.
4-7 Scan Specific Memory under Mmemory
Block Scan
1. Press [13 MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the VFO mode.
3. Press [FUNq + [* MS MS.M]. * should appear
at the bottom of the memory number.
4. To start the memory scan, pr(
5. Key in the block number to st,
memory scan.
6. To stop scanning, press [D Cl
24

4-8 Tone Squelch Frequency Scan
0 Scans through the CTCSS tones for the selected
frequency to help you determine which sub-audible tone is being used.
Only the busy scan is provided.
1. Press [13 MAIN MONO] to select the main band.
2. Press [FUNq+[7 TSO] until TSQ icon appears.
3. Press [FUNq+[o SET/Sl3] to enter the Set Menu
mode.
4. Turn CH to select the menu "CTCSS
5. Press [FUNq+[D CIL PS] to start scanning tone
squelch frequencies. AT-600 stops scanning when it detects a CTCSS tone.
6. To stop scanning, press [D CL PS].
445.000
145.100
CTCSS
110.9
CTCSS M
I 10'.'9'.:
4-9 Selecting Scan Resume Type *To change the scan resume type, start
scanning,
then press [FUNq + [0 SET/SB] to switch- between the scan resume type.
Sceh Resume Type
Description
: @.. Indicatio n
Pause
Scanning resumes after
5 seconds.
B" is not in the
display,
Busy
Scanning resumes
2 seconds after
transmission ends.
B" flashes to the
right of the frequency.
Stop
Scanning does not automatically resume. Turn CH to resume.
B" appears to the
right of the frequency.
25

5 Dual Watch
0 Dual Watch allows you to monitor two different
frequencies within the same band. The AT-600 checks the second frequency
for activity every three seconds and stays on the frequency if there is
activity. When a VFO signal is received during dual watch, the AT-600
checks the memory channel every three seconds so the signal is heard
intermittently
Rotating the SOL control fully counterclockwise or press [SOL OFF]
pauses dual watch in order to listen to the memory channel. The AT-600
provides you with dual watch between a VFO frequency and any of the
following secondary frequencies: (1) Memory MOO, (2) Any memory Mxx, (3)
The calling frequency. (4) Memory under scanning. The dual watch timing
diagram- between a VFO frequency and a memory channel is as below,
0.5 S SIMC APPWS D..... @'M'
DUAL
0 Note:
(1) You can only change the VFO freqi
dual watch.Squelch function is not to use. (2) Tone Encode and Tone
Squelch fui used during dual watch. (3) You can only transmit on the VFO
f during dual watch. Paging or code! operation is not recommended to u@
to transmit on the memory frequen first press [D CL PS] to exit the dua
operation.
5-1 Memory MOO Dual Watch
1. Press [B MAIN MONO] to select the
2. Press (C V/M ENT] to select the VFC
3. Press [FUNq + [2 DUAL]. "DW" icot
the lower right of the frequency.
4. Confirm that MOO is checked every tt
5. Press [D CL PS] to exit the MOO dual
operation,
TIMING DIAGRAM FOR VOD DURING THE DUAL WATCH MODE.
26

445.000 M MOO 14 4. 280
445.000
145.100
5-2 Any Memory Mxx Dual Watch
1. Press [B MAIN MONO] to select the main band.
2. Press [C V/M ENT] to select the memory mode.
3. Select the memory address by turning CH or
using the keypad.
4. Press [FUNq + [2 DUAL]. "DW" icon appears to
the lower right of the frequency.
5. Confirm that Mxx is checked every three seconds.
6. Press [D CL PS] key to exit the Mxx dual watch
operation.
445.000 M *144.280
445.000
145.100
5-3 Call Channel Dual Watch
1. Press [B MAIN MONO] to select the main band.
2. Press [A CALL SIFT] to recall the call channel.
3. Press [FUNC] + [2 DUAL]. TW" icon appears to
the lower right of the frequency.
4. Confirm that the call channel is checked every
three seconds.
5. Press [D CL PS] to exit the Call channel dual
watch operation
445.000 C 135. 000
445.000
145.100
5-4 Memory Sequence Dual Watch
1. Press [B MAIN MONO] to select the main band.
2. Press [* MS MS.M] to start scanning all
programmed memories.
3. Press [FUNq + [2 DUAL]. TW" icon appears to
the lower right of the frequency.
4 Confirm that the next programmed memory is
checked every three seconds. For example, if memories 1, 5, 11, 15, and
21 are programmed, the AT-600 stays on the VFO for 3 seconds, then
checks M01. It then stays on the VFO for 3 seconds, then checks M05. It
continues to sequence through programmed
27

memories until you exit the dual watch operation.
5. Press [D CL PSI to exit the memory sequence
dual watch operation.
445.000 M mm"O' ` 14 4,.: 2 8 0
445.00
1455
5-5 Changing Dual Watch Speed *Normally, the AT-600 stays on the VFO
frequency
for 3 seconds and then checks the memory channel for 0.5 second during
dual watch operation. You can set the AT-600 to monitor each frequency
for
0.6 second.
1. Press [FUNq+[o SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "Dul Wtch Spd nor
3. Hold down [FUNq and turn CH to change " Dul Wtch Spd nor to " Dul
Wtch Spd fst
You can also press ID PAG] or [0 SET/SB] to change the setting.
4. Repeat step 1 or press (1) CL PSI to exit the Set
Menu mode.

OPERATING THROUGH REPEATERS
6 Operating Through Repeaters
The repeaters for all Amateur Radio use a different receive and transmit
frequency. The difference frequency between the receive and transmit is
called its offset. The receive frequency may be higher or lower than the
transmit frequency but the difference is a fixed split. To use a
repeater, the AT-600 must be set to duplex operation-You transmit on one
frequency which is the same as the repeater's receive frequency and
receive on another frequency which is the same as the repeater's
transmit frequency. If the receive frequency is higher than the transmit
frequency, the repeater has a positive offset. If the receive frequency
is lower than the transmit frequency, the repeater has a negative
offset. The AT-600 dual bander provide an "Auto Repeater Shift "
function which sets the required transmit offset automatically when you
select a frequency in the VFO mode on the 144MHz band. Auto Repeater
Shift is programmed according to the American Radio Relay Leagues(ARRL)
Band Plan for repeater offset direction. For the users outside the
USA, you can turn off the "Auto Repeater Shift and set your specific
applications.
AUTO RPT M Sft Off
Receive Frequency
Transmit Offset
144.000 to 145.095 MHz
No offset(Simplex)
145.100 to 145.495 MHz
- offset
145.500 to 145.995 MHz
No offset(Simplex)
146.000 to 146.395 MHz
+ offset
146.400 to 146.595 MHz
No offset(Simplex)
146.600 to 146.995 MHz
-offset
147.000 to 147.395 MHz
+ offset
1 147.400 to 147.595 MHz
No offset(Simplex)
1 147.600 to 147.995 MHz
I
6-1 Setting Offset Direction
0 + : to the right of the frequency indicates a positive
offset. The transmit frequency is higher than the receive frequency by a
fixed amount. to the right of the frequency indicates a negative
29

offset. The transmit frequency is lower than the receive frequency by a
fixed amount. Neither + nor - appears to the right of the frequency
indicates simplex operation.
1. Press [13 MAIN MONO] to select the main band.
2. Press [FUNq + [8 RPT] to select the offset
direction.
445.000
145.100-
6-2 Changing Offset Frequency *The default offset frequency is 0.6MHz
for VHF
band and 5MHz for UHF band.
1. Press [FUNC] + [0 SET/SB] to enter the Set
Menu mode.
2. Turn CH to select the menu "Offset 0.600 (VHF band) or "Offset 5.000
" (UHF band).
3. Hold down [FUNC] and turn CH to select new
offset frequency You can also press [# ID PAG] or [0 SET/Sl3j to change
the setting.
4. Repeat step 1 or press [D CL PS] to exit the Set
Menu mode.
Offset
0.600
6-3 Reversing Transmission and Recept
Frequency Reversing must be set under the repeater i
This allows you to quickly check the repeal receive frequency to see if
you can hear a directly. (not through the repeater)
1. Press [FUNC] + [9 REV]. The offset dire the repeater is reversed.
(What was the tre now the receive and vice versa) The offset + and -
flashes.
445.000 M
145. 100':
6-4 Cross-Band Repeater Operations * This feature allows you to set the
AT-600
automatically retransmit on one band a sig
30

receives on the other band. This function cannot be used under single
band operation.
1. Press [FUNq + [0 SET/SB] to enter the Set
Menu mode.
2. Turn CH to select the menu "XBd-RPTR Off
3. Hold down [FUNq and turn CH to turn on the
cross-band repeater function. C icon appears on the lower left side of
the display. You can also press [# ID PAG] or [0 SET/SB] to change the
setting.
4. Repeat step 1 twice to exit the cross band
repeater mode.
XBd-RPTR M
0 f f
445.000
145.100
Note: (1) If there is a continuous transmission, disconnect
the antenna and turn the squelch control clockwise until the
transmission stops. (2) Always monitor your AT-600 and the 2m/70cm
frequencies you select for crossband repeating.
..11
Continuous transmissions from the AT-600 may cause unrealized
interference to other stations and/or overheating of the AT-600. Use the
time-out-timer (See 9-13) to limit transmit time. Be careful to avoid
using the third harmonic frequencies for cross-band repeating, as the
AT-600 can be deafened by its own signal and lock on transmit.(For
example,
145.35MHz and 436.05MHz) If that accidentally happens,turn off the
AT-600, then hold down [B MAIN MONO] and switch the AT-600 back on.
6-5 Setting 2-Second Cross-Band Repeater
Delay When this function is activated, the AT-600 continues to transmit
for 2 seconds after the input signal disappears.
1. Press [FUNq + [0 SET/SB] to enter the Set
Menu mode.
2. Turn CH to select the menu "RPT-DLY Off
3. Hold down [FUNC] and turn CH to change "RPT-DLY Off " to "RPT-DLY
On".
You can also press [# ID PAG] or [0 SET/SB] to change the setting.
4. Repeat step 1 or press [D CL PS] to exit the Set
Menu mode.

RPT-DLY Off
DTMF FEATURE
7 DTMF Features
DTMF stands for "Dual-Tone Multi-Frequency" and is the common acronym
for the touch tones used by telephone. Besides the common tones for
0-9, * and #, the AT-600 can generate the tones for DTMF A, B, C, D.
7-1 Manually Transmitting DTMF Codes
1. Press and hold down [PTT], TXJRX BUSY
indicator should light red.
2. Press 0-9, *, #, A, B, C, D, you can transmit all
16 different DTMF codes. Note: To transmit DTMF D, you must press D
twice.
445.000
145.100
7-2 Storing DTMF Sequences *Ybu can use the DTMF memories to store DTN
sequences in your AT-600. This allows you to quickly transmit sequences
you use to page oth partners, use autopatches, or access repeater

features. The AT-600 provides 10 DTIVIF memories (0-9), each memory
holds up to 15 digits.
1. Press [FUNq + [4 DTMF.M], "X
appears on the display. "X" is the DTIVIF memory number.
2. Turn CH to select the memory address number
which you want to save a sequence in.
3. Press [FUNq + [ A CALL SIFT]. The first dash
mark flashes.
4. Use the keypad to enter the DTIVIF sequence you
want to store(up to 15 digits).
5. The DTIVIF sequence is stored automatically when
the 15th digit is entered. To store fewer than 15 digits, press [FUNq +
[C V/M ENT].
6. To correct the entry, turn CH to move the cursor
left or right to the digit you want to change, then enter the new digit.
7. Press [FUNq + [4 DTMF.M] again or press [D CIL PS] to return to the
previous mode.
n U
n U
7-3 Clearing DTMF Memory .1. Press [FUNq + [4 DTMF.M].
2. Turn CH to select the memory location you want
to erase.
3. Press [FUNq + [C V/M ENT]. "Clear? " should
appear on the display.
5. Press [FUNq + [C V/M ENII again, the memory
is erased.
6. Press [FUNq + [4 DTIVIRIVI] again or press [D CIL PS] to return to
the previous mode.
4450000 M I `WI Clear?
7-4 Transmit DTMF Sequence from Memory
1. Press and hold down the [PTT ], then press [ D CL PS ]. " D " should
appear on the frequency's
first digit of the frequency.
2. Continue to hold down the [PTT ], and enter the
desired DTIVIF memory number. The AT-600 transmits the DTMF sequence.
33

445.000 D45. 100
7-5 Changing DTIVIF Transmitting Speed
0 Normally, the DTMF sequences is sent with a
50ms pause between digits. To change the speed, you can use the menu to
set "DTMF Tx Spd" with a 100ms pause between digits.
1. Press [FUNq + [0 SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu " DTMF TX Sp nor
3. Hold down [FUNq and turn CH to change " DTMF TX Spd nor " to "DTMF TX
Spd lo". You
can also press [# I D PAG] or [0 SET/SB] to change the setting.
4. Repeat step 1 or press [D CIL PSI to exit the Set
Menu mode.
DTMF TX M Spd nor
DTMF TX M Spd lo
7-6 Using DTMF Decode Function
9 You can use the DTMF decode function' decode a string of DTMF tones up
to 15 d
1. Press [FLINq + [0 SET/SB] to enter the
Menu mode.
2. Turn CH to select the menu "Decode D'
3. Hold down [FLINq and turn CH. 15 cor
dash line appears on the display. The A ready to decode the DTMF tone.
You cz press [# ID PAG] or [0 SET/SB] to activi DTMF decode function.
4. Repeat step 1 or press [D CIL PS] to ex
Menu mode.
Decode M DTMF Off
34

7-7 DTMF Paging
0 DTIVIIF paging uses a string of 7 DTIVIF digits, which are specially
formatted sequences, as shown below.
1 1 st
I 2nd I
3rd I
4th I
5th I
6th
I ID of called station I
flag I
ID of calling station_
There are eight DTIVIIF paging code memories, COC6 and CR Each memory
holds a 3-digit code. CO holds your personal paging code. C1 -C6 store
other partner's paging codes or group codes. CP is read only It stores
the ID of the calling station. When you want to page someone, you must
first set a personal paging code and one or more group codes, then turn
on the paging feature. Once you transmit, their code along with yours is
sent as the DTIVIIF paging string. Actually, the paging sequence can be
transmitted manually by using keypad.
445.000 M
* co: 000 M
7-8 Setting Peraonal or Group Code
1. Press [FUNq + [5 CODE].
2. Turn CH to select paging code memory CO.
3. Enter 3-digit personal code. When you use the
keypad to enter the third digit, the AT-600 sounds a long tone.
4. Repeat steps 2-3 to select the paging code
memory you want to set. (Cl -C6)
5. Press [FUNq + [5 CODE] or press [D CIL PS] to
return to the previous mode. Note: To set a code as a group code, press
[FUNq + [* IVIS IVIS.M], so the * appears next to the paging code memory
number. You can only program the digits 0-9 into a paging code memory
445.000
ci: 000
7-9 Paging from Memory
1. Press [FUNC ] + [ # ID PAG], "PAG" icon
appears at the bottom of the frequency display.
2. Press [FUNC ] + [5 CODE].
35

3. Turn CH to select the desired individual or group paging code memory
you want to page.
4. Press [ PTT ], the AT-600 transmits a string of 7
DTMF code.
5. The receiving AT-600 rings and displays "CP: XXX ", where )3D is
your personal code. Note: When " PAG " icon appears, the AT-600
transmits the above sequence every time you press [ PTT ] and does not
open squelch unless it receives a valid paging code.
445.000
145.100
7-10 Setting Page Squelch
0 In paging mode, the AT-600 normally opens squelch after it receives
the paging code stored in CO or a valid group code. To have the AT-600
keep squelch closed after it receives a valid code, turn off page
squelch.
1. Press [FUNq + [0 SET/SB] to enter the Set
Menu mode.
2. Turn CH to select the menu "PAGE SQL Off
3. Hold down [FUNq and turn CH to char "PAGE SQL Off " to "PAGE SQL On
". )
can also press [# ID PAG] or [0 SE' change the setting.
4. Repeat step 1 or press [D CIL PS] to ex
Menu mode.
PAGE SQL
Off
7-11 Setting Page Delay
0. Normally, the AT-600 waits 450ms after tl
is pressed to send the paging codes. ThiE be long enough to allow some
repeaters i So it is necessary to change the page del
1. Press [FUNq + [0 SET/SB] to enter th,
mode.
2. Turn CH to select the menu "PAGE-DL
3. Hold down [FUNq and turn CH to cha "PAGE-DLY 450" to TAGE-DLY 750"
can also press [# ID PAG] or [0 SET/Sl the setting.
36

4. Repeat step 1 or press [D CIL PS] to exit the Set Menu mode.
PAGE-DLY M
450
7-12 Changing Page Rings
9 Normally, the AT-600 rings 5 times after it receives a page. The
number of rings can be changed to 1 ring or no ring.
1. Press [FUNC] + [0 SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "PageRing 5".
3. Hold down [FUNq and turn CH to change " PageRing 5" to " PageRing 1 "
or
PageRing Off ". You can also press [# ID PAG]
or [0 SET/SB] to change the setting.
4. Repeat step 1 or press [D CIL PS] to exit the Set
Menu mode.
PageRing M
5
7-13 Using DTMF Code Squelch
e With code squelch, all stations use the same
3-digit DTMF code. It allows you to set the AT-600 to mute all calls
that are not preceded by a 3-digit code which you select. Each time you
press [PTT], your AT-600 transmits this same 3-digit DTMF code. This
lets you set up a DTMF code squelch group that allows you to avoid
hearing transmissions from outside your code squelch group.
1. Store the desired 3-digit DTMF code in one of the
paging code memories. (See 7-7)
2. Press [B MAIN MONO] to select main band,
3. Press [FUNC ] + [ # ID PAG] twice until "CSQ"
icon appears at the bottom of the frequency display.
4. Press [FUNq + [5 CODE]. The AT-600 displays
the current paging code memory.
5. Turn CH to select the code to which you want your
AT-600 to respond.
6. Repeat step 4 to return to the previous mode.
445.000
- cl: 000
37

CTCSS FEATURES
8 CTCSS Features
Only when the CTCSS unit is installed, the AT-600's CTCSS(Continuous
Tone Coded Squelch System) function can be used. CTCSS functions by
using a sub-audible tone which is superimposed on a transmitted carrier
to control a receiver's squelch. CTCSS allows you to transmit the
sub-audible tone required by some repeaters, and also allows you to set
a sub-audible tone that your AT-600 must receive to open the squelch. To
use tone squelch, you must set the sub-audible tone, then turn on the
tone encode or tone squelch option.
8-1 Using Tone Encode
1. Press (B MAIN MONO] to select main band.
2. Press [FUNq + [7 TSO], "T" icon appears on the
display. When only T is on the display, reception is not affected.
3. Press [FUNq+[7 TSQ] twice to exit tone encode
mode.
445.000
145.100
8-2 Using Tone Squelch *You will not hear any transmission thi
include the selected CTCSS tone.
1. Press [B MAIN MONO] to select me
2. Press [FUNq+[7 TS01 twice until "I
appears on the display.
3. Press [FUNq+[7 TSQ] to exit tone c
445.000
145.100
8-3 Sefting CTCSS Tone
1. Press [B MAIN MONO] to select the
2. Press [FUNq+[o SET/SB] to enter t
mode.
3. Turn CH to select the menu " CF I I(
4. Hold down [FUNq and turn CH to si
CTCSS tone from the tone frequencl. illustrated below. You can also
press or [0 SET/SB] to select a new CTCS
5. Repeat step 2 or press [D CIL PS] to
Menu mode.
38

CTCSS
110.9
Tone frequency chart ( Unit: Hz )
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
162.2
1 7.9
173.8
179.9 1
186.2
192.8
203.5
210.7 1
218.1
225.
..6
1 241.8
250.3
-I

ADDITIONAL FEATURES
9 Additional Features
9-1 Setting AM Reception Mode
0 AM reception is available only with the VHF band.
Once the menu "AM Mode Off" is turned on, "A" replaces the first digit
of the frequency you select
1. Press [FUNq+[o SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "AM Mode Off".
3. Hold down [FUNC] and turn CH to change "AM Mode Off" to "AM Mode On".
You can also
press [# ID PAq or [0 SET/SB] to change the setting.
4. Repeat step 1 or press [D CIL PS] to exit the Set
Menu mode.
5. Confirm AM reception is activated, the 1 OOMHz
digit is replaced by "A".
AM Mode M
0 f f
445.000 A45. 100
9-2 Setting Auto Power Off
The AT-600 automatically turns off if it does not receive a signal or
keypad entry within 30 minutes.
When the APO is activated, a warn sounds 1 minute before the power t
1. Press [FUNq+[o SET/SB] to enter
mode.
2. Turn CH to select the menu "APO C
3. Hold down [FUNq and turn CH to c "APO Off " to "APO On ". You can a
[# ID PAG] or [0 SET/SB] to change
4. "APO" icon should appear on the loi
the display.
5. Repeat step 1 or press [D CIL PS] tc
Menu mode.
APO
Off
9-3 Setting Reception Attenuation(A
The menu "ATT" is designed to change band's sensitivity To improve
reception where there are many RF interference can reduce your AT-600's
sensitivity.
1. Press [FUNC]+[O SET/SBI to enter tl@ mode.
40

2. Turn CH to select the menu "ATT Off ".
3. Hold down [FUNq and turn CH to change
11A17 Off 11 to "A17 On". You can also press [# ID PAG] or [0 SET/SB] to
change the setting.
4. "A" icon should appear at the bottom of the
frequency display.
5. Repeat step 1 or press [D CL PSI to exit the Set
Menu mode.
AUTO AM Off " to "AUTO AM On ". You can also
press [#I D PAG] or [0 SETISB] to change the setting.
4. Repeat step 1 or press [D CL PSI to exit the Set
Menu mode.
5. Confirm that AM reception is activated if you select a
frequency between 108.OOMHz and 136.995MHz. The I OOMHz digit is
replaced by "A".
ATT
Off
445.000
145. 100
AUTO AM M
Off
445.000 A35. 100
9-4 Setting Auto AM Mode
IF you select a frequency between 108.OOMHz and
136.995MHz, the AT-600 automatically selects AM reception. "A" replaces
the I OOMHz digit of the frequency when the AM mode is turned on. The
menu "AM Mode Off" automatically changes to "AM Mode On ".
1. Press [FUNq+[o SET/SBJ to enter the Set Menu
mode.
2. Turn CH to select the menu " AUTO AM Off".
3. Hold down [FUNCI and turn CH to change
9-5 Setting Auto Power On Function
9 If you release the battery pack or unplug the DC
power input without pressing the [PWR] key, the AT-600 turns on
automatically after the power is recovered.
1. Press [FUNq+[o SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu"ALITO PWR ON Off
3. Hold down (FUNCI and turn CH to change "AUTO PWR ON Off " to " AUTO
PWR ON On".
You can also press [# ID PAG] or [0 SET/SB] to change the setting.
41

4. Repeat step 1 or press [D CIL PS] to exit the Set Menu mode.
AUTO PWR H ON Off
9-6 Turning Entry Beep Tone On/Off
You can turn on or turn off the entry beep sound as you like.
1. Press [FUNC]+[O SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "Beep On".
3. Hold down [FUNC] and turn CH to change "Beep On" to "Beep Off". You
can also press [# ID PAG] or [0 SET/SB] to change the setting
4. Repeat step 1 or press [D CIL PS] to exit the Set
Menu mode.
BEEP
On
9-7 Cloning *The clone feature allows you to copy all
and memory contents from one AT-600 others by: (1) Transmitting a
sequence codes from the source AT-600 to the tar AT-600(s), (2)
Transmitting all settings a contents from one AT-600 to any others (3)
Programming by a personal compute (IBM compatible PC with Windows 9,rN
Wireless cloning
1. Set a transmit frequency on the source
2. Set the target AT-600(s) to the same bc
frequency as the source AT-600.
3. Press [FUNq+[o SET/SB] to enter the
mode on both the source AT-600 and a AT-600(s).
4. Turn CH to select the menu "Clone Of
the source and the target AT-600(s).
5. Hold down [FUNq and turn CH or pre [# ID PAG] or [0 SET/SB] on both
the i
the target AT-600(s). All the portables,, display the frequency you
previously si step 1 and 2. "PAG" and "CSQ" should appear on the
display.
42

6. Press [PTT] on the source AT-600 to start cloning.
7. During Cloning, TAG" flashes on each target
AT-600's display. While TAG" and TSW should disappear from the display
of the source AT-600.
8. It takes about 6 minutes to complete the cloning.
After cloning is completed, each target AT-600 turns off automatically.
If a cloning error occurs, TLN Err" appears on the target AT-600's
display.
9. If TLN Err" occurs, repeat steps 1-7 and try
again.
Clone
0 f f
445.000
145.100
0 Wire cloning
1. Put source and target AT-600(s) into programming
mode by pressing and holding down [FUNC] + [ 2 DUAL] while switching on
by pressing [PWR]. "I c> RX 2 c> TV should appear on the display.
2. Press [11 PO] to select the target AT-600(s).
3. Connect the wires with Philips connector to the
source AT-600 and the target AT-600(s), as illustrated below.
4. To start the cloning, press [2 DUAL] on the source
AT-600.
5. It takes about 40 seconds to complete the cloning.
After cloning is completed, each target AT-600 should display "OK".
I 3D> RX
2 3D> TX
PC 3D > HT
SPK JACK
To TRANSCEIVER
SPK
MIC @@r
JACK SP
MI
TO TRANSCEIVER
43

0 Programming by a personal computer
1. Put source and target AT-600(s), into programming
mode by pressing and holding down [FUNq+ [ 2 DUAL] while switching on by
pressing [PWR]. "ll o RX 2 c> TX" should appear on the display.
2. Press [11 PO] to select the target AT-600(s).
3. Connect the wire supplied by ADI to the personal
computer and the target AT-600, as illustrated below.
4. Follow the programming instructions supplied in
the ADI software.
MIC JACK
SPK JACK
TO TRANSCEIVER
9-8 Full Duplex Operation
0 Full duplex operation allows you to transmit on
one band while receiving on the other band without muting reception.
This operation closely resembles
speaking over a telephone.
1. Press [FUNC]+[O SET/SB] to enter the Se
mode.
2. Turn CH to select the menu "Duplex Off
3. Hold down [FUNq and turn CH to chango "Duplex Off " to "Duplex On".
You can E
[# ID PAGI or [0 SET/SB] to change the si
4. Confirm that the " DUP " icon is displayed.
5. Repeat step 1 or press [D CL PSI to exit I
Menu mode. Notes: To avoid an echo between the intern,
microphone and speaker, use of the, speaker/microphone is recommende set
menu for speaker configuration(s is either "Speaker Mode IE " or
Speaker Mode E I " depending on
band is selected as the main band.
Dup le x M
0 f f
445-.
1450
44

9-9 Setting 1 KHz Digit Option Normally, you have to enter 6 digits(from
I OOMHz digit to 1 KHz digit) to finish the frequency setting.You can
set your AT-600 to either manually or automatically set the 1 KHz digit.
1. Press (FUNC]+[O SET/SBj to enter the Set Menu
mode.
2. Turn CH to select the menu " 1 K Digit On".
3. Hold down [FUNq and turn CH to change `I K Digit On" to "l K Digit
Off `Nou can also press [# ID PAG] or [0 SET/SBJ to change the setting.
4. Repeat step I or press [D CL PS] to exit the Set
Menu mode.
5. With the 1 KHz digit switched off, it is only
necessary to enter 5 digits of a new frequency entry. However, if the 1
KHz digit is switched on, then all 6 digits of a new frequevcy must be
entered. The AT-600 will automatically set the last digit to the nearest
multiple of either 5 KHz or
6.25KHz. The following table illustrates the final result.
1K Digit M
On
Last 2 digits entered
Final result
Reference Frequ ency
I
11,12,13
125
6.25 KHz
2
37,38,39
375
6.25 KHz
3
61,62,63
625
6.25 KHz
4
87,88,89
875
6.25 KHz
5
ExCW hems 1-4, the last digit determines the final result.
1 KHz: 0, 1 2,3 -), 0
4,5,6,7,8,9 45
X0 X 5
5 KHz
For example, enter number 1, 4, 4, 8, 8, 8 will get a frequency of "
144.8875 " with internal reference frequency 6.25KHz.
9-10 Setting Power On Message.
9 Having a unique power on message is one way
to personalize your AT-600.The power on message is up to 6 characters.
It will be displayed and stay for about 1 see each time you turn on your
AT-600.
45

1. Press [FUNq+[o SET/SB] to enter the Set Menu mode.
2. Turn CH to select the menu " PwrOnMsg
3. Press [FUNq+[A CALL SIFT], a flashing cursor
should appear under "PwronMsg".
4. Turn CH to select the character.
5. Hold on [FUNq and turn CH to move the cursor.
You can also press [# ID PAG] or [0 SETISB] to move the cursor.
6. Repeat steps 4-5 until you have entered the
desired power on message.
7. Press [FUNq+[c V/M ENT] to save the
message. To quit without saving the message, Press P CL PS].
8. Repeat step 1 or press [D CIL PS] to exit the Set
Menu mode.
PwrOnMsg M
AT-600
PwrOnMsg M
AT-600
9-11 Battery Save
9 The battery save option allows you I
AT-600's battery life. The battery sai actually turns off one or both of
the, section for a period of time you spec turns on the AT-600 to check
for a si detects a signal, it stays on until 2 s, the signal disappears.
1. Press [FUNq+[o SET/SB] to enter
mode.
2. Turn CH to select the menu "Save I
3. Hold down [FUNq and turn CH to c
to "Save 0.5" or "Save1.O"--- or "I should appear in the display. You CE
[# I D PAG] or [0 SET/SB] to change
4. Repeat step 1 or press [D CIL PS] ti
Menu mode.
TtE CN/OFF SrATE DARC TIE BATITRY SAVE MODE.
46

SAVE M
Off M
445,000 M
145,100 M - - -
With external speaker connected
9-12 Selecting Internal/External Speaker
0 This function allows you to select which band
uses an external speaker instead of the internal speaker.
1. Press [FUNq+lo SET/SB] to enter the Set Menu
made.
2. Turn CH to select the menu "Speaker Mode I I
3. Hold down [FUNq and turn CH to change "Speaker Mode I I "to the other
configurations.
You can also press [# ID PAG] or [0 SET/SB] to change the setting.
4. Repeat step 1 or press [D CL PS] to exit the Set
Menu mode.
Soong
VHIF sound
UHF sound
I I
External speaker
External speaker
I E
Internal speaker
External speaker_
E I
External speaker
Internal speaker
Without external speaker connected
Setting
VHIF sound
UHF sound
I I
Internal speaker
Internal speaker
I E
Internal speaker
No sound
I E I I
No sound I
Internal speaker
Speaker M Mode I I
47

9-13 Setting Time-Out Timer (T.O.T)
0 The time-out-timer feature alerts you if you transmit for longer than
a specified period of time. This feature prevents channel tie-up and
excessive battery drain in case the [PTT] is accidentally pressed. The
AT-600 provides the users with from one to 15 minutes of selection for
the time-out timer. When transmit time is limited, the AT-600 sounds a
warning beep before it stops transmitting.
1. Press [FUNC]+[O SET/SB] to enter the Set Menu
mode.
2. Turn CH to select the menu "TOT Off
3. Hold down [FUNq and turn CH to change
11TOT Off 11 to 11TOT 1 11 or "TOT 2" --- or
TOT 15", whichever you may desire. You can also press [# ID PAGI or [0
SET/SB] to change the setting.
4. Repeat step I or press [D CL PS] to exit the Set
Menu mode.
TOT
Off
9-14 Battery Voltage Reading * This feature allows you to read the ba
voltage anytime anywhere.
1. Press [FUNq+[o SET/SB] to enter tt
mode.
2. Turn CH to select the menu "Voltage
3. The battery voltage appears under
the display.
4. Repeat step 1 or press [D CL PS] to
Menu mode.
Vol tage M
8.3
9-15 17501-1z Tone Burst
0 For European models, this function all transmit a tone burst signal to
access rE To use a repeater, the AT-600 must be., operation-You transmit
on one frequenc the same as the repeater's receive freqL and receive on
another frequency which same as the repeater's transmit frequen
1. Press [13 MAIN MONO] to select main
48

2. Press [FUNq + [8 RPTI to select the offset direction.
3. Set the offset frequency. (See 6-2)
4. To transmit a 1750Hz tone burst, press [ PTT +[D CL PS], T" should
appear at the 1 OOMHz digit.
Keep holding down the [ PTT ] and press [A CALL SFT] .
445.000
145.100-
445.000 D44. 500-
445.000
144-.500-
49

SPECIFICATIONS
GenwW@ Specification
Frequency Range
VHF: 144.0 - 146.0 MHz VHF: 144.0 - 148.0 MHz UHF: 430.0
- 440.0 MHz TUHF: 438.0 - 450.0 MHz
Modulation Type
Microphone Input Impedance
6009
Speaker Impedance
8Q
Supply Voltage
6.0 -16.0 V
Nominal Voltage
7.2 V
Current Consumption
Transmitting (13.8 V)
High(5M S1.5A (UHF) s1.4A (VHF) Medium(2.OW)
:51.OA (UHF) :50.9A (VHF) Low(0.35M :0.5A (UHF)
4.5A (VHF)
Receiving
Dualmode !zWmA Single mode :s50mA(UHF) s40mA(VHF)
Battery Saving
Dual mode :gWmA Single mode e.20mA
Dimension(H x W x D, mm) I
189 x 61 x 43 (without power pack & protrusion)
Weight
380g(without power pack & antenna)
ROCWng
Reception Type
Dual Conversion Superheterodyne
Intermediate Frequency
1st IF: 21.80MHz, 2nd IF: 450KHz(VHF)
1st IF: 23.05MHz, 2nd IF: 450KHz(UHF)
Sensitivity (1 2dB SI NAD)
0.16jiV (VHF), 0.18jjV (UHF)
S/N Ratio at 1 jjV
a! 33dB(UHF), k 35dB(VHF)
Threshold Squelch Sensitivity I
0-15 JJV
Audio Output Power I
450mW (8 9, 10% distortion), More than 230mw (80, )U% distortiom
50

POW 77,7773D777
Modulation Method
Reactance modulation
Maximum Frequency Deviation
5KHz
Suprious Output
:r -60 dBc
Built-in Microphone
Condenser microphone
Output Power(W) (13.8 / 7.2V) I
I
High 5 1.8 (UHF) Medium 1.8/1.8 (UHF) LOW
0.35/0.35 (UHF)
5.0/2.0 (VHF)
2.0/2.0 (VHF)
0.35/0,35W (VHF)
The specifications are subject to change without prior notice.
51

ADI Communications
ONE YEAR LIMITED WARRANTY
* ADI Communications Corp. warrants this product against defects in
material and workmanship.
* In the unlikely event of any failure due to defect in material or
workmanship, occuring within one year of purchase,
this product will be repaired or replaced at our discretion at no
charge.
* The defective product should be returned in its original packing and
with proof of the date of the original retail
purchase to your dealer for warranty service.
* The warranty does not cover accident, misuse, fire, flood and other
Act of God, unauthorized repair or altered serial
numbers.
* Some statutory regulations do not allow for the exclusion or
limitation of incidental or consequential damages, nor
allow limitations on how long an implied warranty lasts, therefore the
above limitations may not apply to you,

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"600mod.txt"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename"600mod.txt"

AT-600 Modifications

Currently there several different versions of the ADI AT-600 firmware
to hit the States. Which firmware version you have will affect how
difficult expanding your rig's transmit range is.

Prototype (firmware 1.00) and early production versions of the radio
(firmware 1.10) were capable of accessing very wide expanded transmit
merely through a software (i.e. keypad) modification. Using the keypad
mod on middle versions of the radio (firmware version 1.20) extends
the transmit range only very slightly. You must perform the hardware
mod on the radio in order to access complete expanded transmit. The
newest version, firmware 2.00, is now available! It restores the
ability to access out of band transmit from the keypad, and fixes a
few of the radio's bugs, including the cross-band repeater problem
that some of the older units suffered from.

How do you know which version of the firmware you have? Try performing
the keypad mod on the radio. After you enter the last step of the mod
the display will read:

KEY OK!
Ver #.##

Now, on to the mods! (NOTE: In the U.S. it is illegal to use this
radio on any band for which it is not type accepted and on which you
are not licensed. Perform these modifications at your own risk!)

SOFTWARE MODS:

STEP ONE: First enter the menu mode by pressing (F) and (0 SET / SB)
at the same time. Enter the following sequence of numbers: 1, 4, 6, 2,
and 3. Turn the radio off and then back on.

STEP TWO: After performing the above modification continue with the
following steps to expanded the radio further: Enter menu mode by
pressing (F) and (0 SET / SB) at the same time. Enter the following
sequence of numbers: 1, 4, 6, 2, 3, 1, 1, 2, 8, and 9. Turn the radio
off and turn it back on.

HARDWARE MODS:

MOD #1: Open the radio and remove Q220 from the printed circuit board.
Replace the radio cover. Turn the radio on by holding down (F),
(LAMP), and (5), and pressing the (PWR) button.

MOD #2: Open the radio and remove Q220 and Q221 from the printed
circuit board. (You do not need to remove Q220 if you already removed
it by performing Hardware Mod #1). Replace the radio cover. Turn the
radio on by holding down (F), (LAMP), and (5), and pressing the (PWR)
button.

To find the location of Q220 and Q221 click here to see a diagram. You
can also download 600mod.zip (209 KB), which contains several photos
and diagrams showing the location of the components.

WHAT THESE MODS DO -- Ver 1.00 and 1.10

SOFTWARE STEP ONE: This mod expands the receiver to cover 100-199.995,
330-499.995, 830-868, and 896-999.995 MHz.
SOFTWARE STEP TWO: The transmitter will be opened up to cover
100-199.995 and 400-499.995 MHz.
HARWARE MOD #1: The radio is expanded to transmit from 138-174 and
from 430-470 MHz and receive from 130-174, 350-470, and 900-985 MHz.
HARDWARE MOD #2: The radio will transmit from 100-199.995 and
400-499.995 and receive from 100-199.995, 330-499.995, 830-868, and
896-999.995 MHz.

WHAT THESE MODS DO -- Ver 1.20

SOFTWARE STEP ONE: This mod expands the receiver to cover 100-199.995,
330-499.995, and 896-999.995 MHz.
SOFTWARE STEP TWO: The transmitter will be opened up to cover
142.5-149.5 MHz. The receive range and UHF transmit range remain
unchanged.
HARWARE MOD #1: The radio expands to transmit from 138-174 and from
430-470 MHz and receive from 130-174, 350-470, and 896-999.995 MHz.
HARDWARE MOD #2: The radio will transmit from 100-199.995 and
400-499.995 and receive from 100-199.995, 330-499.995, and 896-999.995
MHz.

WHAT THESE MODS DO -- Ver 2.00

Version 2.00 was released on November 3, 1997. It was released
instead of what was projected to be new version 1.30. Version 2.00 is
considered to be a major revision to the radio's firmware.

SOFTWARE STEP ONE: This mod expands the receiver to cover 100-199.995,
330-499.995, and 850-868, and 896-999.995 MHz.
SOFTWARE STEP TWO: The transmitter will be opened up to cover 100-174,
and 420-470 MHz.
HARWARE MOD #1: The radio expands to transmit from 138-174 and from
430-470 MHz and receive from 100-174, 350-470, 850-868, and
896-999.995 MHz.
HARDWARE MOD #2: The radio will transmit from 100-199.995 and
400-499.995 and receive from 100-199.995, 330-499.995, 850-868, and
896-999.995 MHz.

CELLULAR MODIFICATION:

To my knowledge there is no way to modify the the U.S. version of the
AT-600 for cellular receive. The AT-600 was designed to specifically
not support receive on these frequencies, although the European
version of the radio (AT-600D, for "Deluxe") does have this
capability.

A NOTE ABOUT THE RADIO SHACK HTX-204 and ADI HT-204:

Yes, ADI also designed and manufactured the now no longer available
HTX-204 for Radio Shack. (Some of these radios have also been
available as "ADI HT-204" radios.) For all intents and purposes the
radio is essentially the same as the AT-600. The two radios have
nearly identical physical appearance, but they do have some slight
differences in features: the AT-600 has more of them! For complete
details on the differences check out AD7K's usenet posting!

The Radio Shack HTX-204 can be expanded using the above modifications.
For the exact frequencies it can be programmed to cover see Firmware
Ver 1.10 above.

Back to home

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"600prog.txt"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename"600prog.txt"

[INLINE]

ADI AT-600 Programming Information

I. To Access Expanded Receive:

The AT-600 is already capable of wide-banded receive out of the box.
To widen coverage range even further turn the radio on and enter the
menu system. (To enter the menu hold down "F" and press the "0" key.)
While in the menu system press the following sequence of numbers: "1,"
"4," "6," "2," and "3." You do not need to be in any particular item
on the menu for this to work. After entering this sequence simply turn
the radio off and then back on. The receive range will now be greatly
expanded.

II. To Program Memory Channels:

The AT-600 is capable of storing 200 standard (or 120 alphanumeric
memory channels), 100 (or 60) channels per band. Channels are numbered
00-99 on each band (or 00-59 in alphanumeric mode). To toggle between
120 or 200 channel mode enter the menu system by holding down the "F"
key and pressing "0 / SET / SB" on the keypad. Use the frequency
selector knob to scroll through menu settings until you find the
"Memory SET" menu. You can then toggle between 120 and 200 channel
modes by holding down the "F" key and adjusting the frequency selector
knob. Press the Push To Talk to save the setting.

Select the band that you wish to program a memory for by pressing the
"B" key. (The word "MAIN" appears to the left of the active band.) To
set a memory channel you must be in VFO mode (no "M" to the left of
the display for the active band).

Input the frequency that you want to save on the keypad or select the
frequency using the channel selector knob. If you want to access a
repeater you will need to turn on a repeater offset. To do this hold
down the "F" key and hit "8 / RPT." A minus sign appears to the right
of the displayed frequency to let you know that the a negative offset
has been turned on. Hit "F" and "8 / RPT" again to change this to a
positive shift or a third time to turn the offset off.

Odd Offsets: The AT-600 has a default offset of 600 kHz on VHF and 5
MHz on UHF. If you need to use a split other than the standard one you
will have to program it from the menu. Hold down the "F" key and press
"0 / SET / SB" on the keypad to enter the menu. Use the frequency
selector knob to scroll through menu settings until you find the
"Offset" setting. You can change this value by holding down the "F"
key and adjusting the frequency selector knob. Press the Push To Talk
to save the setting.

If you are trying to program a repeater that requires a CTCSS tone you
will need to turn tone encode on. Hold down the "F" key and press "7 /
TSQ." A "T" appears below and to the right of the active frequency to
let you know that tone encode has been enabled. Hitting "F" and "7 /
TSQ" again will turn on tone decode (which is signified by a "TSQ" in
the display). To set the exact tone frequency being encoded or decoded
enter the menu system by holding down the "F" key and pressing "0 /
SET / SB" on the keypad. Use the frequency selector knob to scroll
through menu settings until you find the "CTCSS" setting. You can then
select the exact tone frequency to use by holding down the "F" key and
adjusting the frequency selector knob. Press the PTT to save the
setting.

To save the frequency into memory hold down "F" and press "C." A "- -"
will appear on the right of the display. Enter the memory channel
number that you want to save the frequency into on the keypad. (If the
memory number is less than 10 enter a "0" before the single digit).
Your memory is now saved!

III. Programming the CALL Channel

The AT-600 is capable of storing a separate CALL channel on each band.
To program the CALL channel select the band that you wish to program a
memory for by pressing the "B" key. (The word "MAIN" appears to the
left of the active band.) To set a CALL channel you must be in VFO
mode (no "M" to the left of the display for the active band).

To save the CALL frequency into memory hold down "F" and press "C." A
"- -" will appear on the right of the display. Press the "A" key to
save the information to the CALL memory.

IV. Using Alphanumerics

The ADI AT-600 is capable of displaying 6 digit alphanumeric
identifiers in each of its memory channels (in 120 channel mode). This
allows you to give each channel a descriptive name, which makes it
easier to remember what each saved channel is.

To enter an alphanumeric ID the memory you wish to make alphanumeric
must be the active frequency. To change the active band press the "B"
key. To enter memory mode press the "C' key. Use the frequency knob to
select the individual memory channel you wish to program. Press the "#
/ ID / PAG" key. The current alphanumeric ID will be displayed in the
window. If no ID has been entered the words "No Name" will be shown.

Press "F" and "A" at the same time. A cursor will flash on the
display. You will now be able to enter the alphanumeric ID. You can
change the flashing digit by using the frequency selector knob. To
change which digit is flashing hold down the "F" key while rotating
the frequency selector knob.

When you are done entering the alphanumeric ID hold down the "F" key
and press "C" to save it. To toggle between alphanumeric and frequency
display mode press the "# / ID / PAG" key.

If you have questions or comments about this web site, or if you'd
like more information about products by PREMIER Communications and
ADI, please
click here

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"Keypad functions.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename"Keypad functions.txt"

Keypad functions and shifted-functions
FUNCTION KEY IS ON SIDE ABOVE PUSH TO TALK AND U HAVE TO HOLD IT WHEN
EVER USING KEY PAD COMMANDS
KEY FUNCTION SHIFTED FUNCTION (F+KEY)
1 Changes power level (HIGH, MEEDEUM, LOW)
2 Starts dual watch
3 Locks PTT
4 Access DTMF memory
5 Access paging code memory
6 Locks the keypad
7 Toggles pl with the deep tone is off and first high tone is to
transmet the pl

8 Sets repeater offset directio
deep tone 3Doff first high tone3D minus second high3Dplus

9 Reverse
0 Enters the menu mode
* Start memory scan Selects a memory for specific memory scan
# key Shows frequ / alpha Set DTMF page / code squelch mode
A key Recalls CALL frequ Enter alphanumeric
B key Changes main band (V/U) Turn off subband
C key Toggle VFO/Memory mode Enter a setting
D key Clear an entry Start scanning

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"main menu.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename"main menu.txt"

menu choices, in order, from the first choice
>(where the radio beeps) to the last, and the factory default settings
for
>these;

Here's the complete list of menu items, plus factory defaults:
note after getting into main menu use vfo nob to get to menu item.
after getting to menu item, use function+nob to go through sub menu or
the 0 key to go down and the # key to go up.

0: AM Mode default3D OFF with the beep *not on 440
1: Auto Power Off default3D OFF
2: Attenuator default3D OFF
3: Auto AM default3D OFF * not on 440
4: Auto Repeater Shift default3D OFF
5: Auto Power On default3D OFF
6: BEEP default3D ON
7: Clone default3D OFF
8: CTCSS/pl 110.9 is default pl
9: Decode DTMF default3D OFF
10: DTMF TX Speed default3D NORMAL
11: Dual Watch Speed default3D NORMAL
12: Duplex default3D OFF
13: Function Step default3D 0.1
14: 1K Digit default3D ON
15: Memory Set default3D 120
16: Offset 0.600 (VHF) 5.00 (UHF)
17: Page Delay default3D 450
18: Page Ring default3D 5
19: Page Squelch default3D OFF
20: Power On Message default3D AT-600
21: Repeater Delay default3D OFF
22: Save default3D OFF
23: Selector Lock default3D OFF
24: Speaker Mode Internal (VHF) Internal (UHF)
25: Step default3D 10.0
26: Time Out Timer default3D Off
27: VFO Low* 100 (VHF) 400 (UHF)
28: VFO Up* 199 (VHF) 499 (UHF)
29: Voltage ?
30: XBand Repeat default3D OFF

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"pl ctcss tones.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename"pl ctcss tones.txt"

to set pl go into main menu by
1: pressing function+0
2: turn the vfo until you hear a beep to get to start of menu
3: turning vfo clook ways 8 clicks
4: with function key press turn the vfo nob until you hear a beep. you
are now on pl 110.9
5: with the list below count how many clicks on the vfo you need to get
the pl you need.
6: make shere to press and hold the function key wile turning the vfo
7: after finding the pl you need press the ptt key to select it.
8: go into main menu by pressing function+0
9: turn the vfo until you hear a beep to get to start of menu
10: turn vfo 9 clicks to get to where you turn the pl on or off
11: with function key press turn vfo to turn pl on
12: press ptt to except it.

the default pl with beep 3D 110.9
pl ctcss tones
243D 67.0
253D 71.9
263D 74.4
273D 77.0
283D 79.7
293D 82.5
303D 85.4
313D 88.5
323D 91.5
333D 94.8
343D 97.4
353D 100.0
363D 103.5
373D 107.2
03D 110.9 is the default pl with beep
13D 114.8
23D 118.8
33D 123.0
43D 127.3
53D 131.8
63D 136.5
73D 141.3
83D 146.2
93D 151.4
103D 156.7
113D 162.2
123D 167.9
133D 173.8
143D 179.9
153D 186.2
163D 192.8
173D 203.5
183D 210.7
193D 218.1
203D 225.7
213D 233.6
223D 241.8
233D 250.3
end of pl ctcss tones

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"pl ctcss tones.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename"pl ctcss tones.txt"

------_NextPart_000_0064_01BFAE8F.DC9E9540
Content-Type: text/plain;
name"PROGRAMING THE ADI600.txt"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename"PROGRAMING THE ADI600.txt"

From: Ken Collier, KO6UX 3D ko6ux@adi-radio.com
Subject: Programming the AT-600
Get on The Air Quickly with the AT-600!

I. To Access Expanded Receive:
The AT-600 is already capable of wide-banded receive out of the box. To
widen coverage range even further turn the radio on and enter the menu
system. (To enter the menu hold down "F+0" While in
the menu system press the following sequence of numbers: {1, 4, 6, 2, 3}
You do not need to be in any particular item on the menu for this
to work. After entering this sequence simply turn the radio off and then
back on. The receive range will now be greatly expanded.

II. To Program Memory Channels:
The AT-600 is capable of storing 200 standard (or 120 alphanumeric
memory channels), 100 (or 60) channels per band. Channels are numbered 00-99 on
each band (or 00-59 in alphanumeric mode). To toggle between 120 or 200
channel mode enter the menu system by holding down the "f+0"
Use the frequency selector knob to scroll
through menu settings until you find the "Memory SET" menu. You can then
toggle between 120 and 200 channel modes by holding down the "F" key and
adjusting the frequency selector knob. Press the Push To Talk to save
the setting.

Select the band that you wish to program a memory for by pressing the
"B" key. (The word "MAIN" appears to the left of the active band.) To set a
memory channel you must be in VFO mode (no "M" to the left of the
display for the active band).

Input the frequency that you want to save on the keypad or select the
frequency using the channel selector knob. If you want to access a
repeater you will need to turn on a repeater offset. To do this hold down the
"F+8" A minus sign appears to the right of the displayed
frequency to let you know that the a negative offset has been turned on.
Hit "F8" again to change this to a positive shift or a third time
to turn the offset off.

Odd Offsets: The AT-600 has a default offset of 600 kHz on VHF and 5 MHz
on
UHF. If you need to use a split other than the standard one you will
have to
program it from the menu. Hold down the "F+0" to enter the main menu.
Use the frequency selector knob to scroll
through menu settings until you find the "Offset" setting. You can
change
this value by holding down the "F" key and adjusting the frequency
selector
knob. Press the Push To Talk to save the setting.

If you are trying to program a repeater that requires a CTCSS tone you
will
need to turn tone encode on. Hold down the "F+7"." A
"T" appears below and to the right of the active frequency to let you
know
that tone encode has been enabled. Hitting "F+7" again will turn
on tone decode (which is signified by a "TSQ" in the display). To set
the
exact tone frequency being encoded or decoded enter the menu system by
holding down the "F+0/SET / SB" on the keypad. Use the
frequency selector knob to scroll through menu settings until you find
the
"CTCSS" setting. You can then select the exact tone frequency to use by
holding down the "F" key and adjusting the frequency selector knob.
Press
the PTT to save the setting.

To save the frequency into memory hold down "F+C" A - will
appear on the right of the display. Enter the memory channel number that
you
want to save the frequency into on the keypad. (If the memory number is
less
than 10 enter a 0 before the single digit). Your memory is now saved!

III. Programming the CALL Channel
The AT-600 is capable of storing a separate CALL channel on each band.
To
program the CALL channel select the band that you wish to program a
memory
for by pressing the "B" key. (The word "MAIN" appears to the left of the
active band.) To set a CALL channel you must be in VFO mode (no "M" to
the
left of the display for the active band).

Input the frequency that you want to save on the keypad or select the
frequency using the channel selector knob. If you want to access a
repeater
you will need to turn on a repeater offset. To do this hold down the "F"
key
and hit "8 / RPT." A minus sign appears to the right of the displayed
frequency to let you know that the a negative offset has been turned on.
Hit
"F" and "8 / RPT" again to change this to a positive shift or a third
time
to turn the offset off.

Odd Offsets: The AT-600 has a default offset of 600 kHz on VHF and 5 MHz
on
UHF. If you need to use a split other than the standard one you will
have to
program it from the menu. Hold down the "F" key and press "0 / SET / SB"
on
the keypad to enter the menu. Use the frequency selector knob to scroll
through menu settings until you find the "Offset" setting. You can
change
this value by holding down the "F" key and adjusting the frequency
selector
knob. Press the Push To Talk to save the setting.

If you are trying to program a repeater that requires a CTCSS tone you
will
need to turn tone encode on. Hold down the "F" key and press "7 / TSQ."
A
"T" appears below and to the right of the active frequency to let you
know
that tone encode has been enabled. Hitting "F" and "7 / TSQ" again will
turn
on tone decode (which is signified by a "TSQ" in the display). To set
the
exact tone frequency being encoded or decoded enter the menu system by
holding down the "F" key and pressing "0 / SET / SB" on the keypad. Use
the
frequency selector knob to scroll through menu settings until you find
the
"CTCSS" setting. You can then select the exact tone frequency to use by
holding down the "F" key and adjusting the frequency selector knob.
Press
the PTT to save the setting.

To save the CALL frequency into memory hold down "F" and press "C." A "-
-"
will appear on the right of the display. Press the "A" key to save the
information to the CALL memory.

IV. Using Alphanumerics
The ADI AT-600 is capable of displaying 6 digit alphanumeric identifiers
in
each of its memory channels (in 120 channel mode). This allows you to
give
each channel a descriptive name, which makes it easier to remember what
each
saved channel is.

To enter an alphanumeric ID the memory you wish to make alphanumeric
must be
the active frequency. To change the active band press the "B" key. To
enter
memory mode press the "C' key. Use the frequency knob to select the
individual memory channel you wish to program. Press the "# / ID / PAG"
key.
The current alphanumeric ID will be displayed in the window. If no ID
has
been entered the words "No Name" will be shown.

Press "F" and "A" at the same time. A cursor will flash on the display.
You
will now be able to enter the alphanumeric ID. You can change the
flashing
digit by using the frequency selector knob. To change which digit is
flashing hold down the "F" key while rotating the frequency selector
knob.

When you are done entering the alphanumeric ID hold down the "F" key and
press "C" to save it. To toggle between alphanumeric and frequency
display
mode press the "# / ID / PAG" key.
end of file

Disclaimer: The information on this site is provided as a public service to the blind and visually handicapped community. While we have done our best to ensure the information provided is accurate, please realize the use of any information on this site is solely at your discretion and we take no responsibility for use or attempted use of this information.