Selected Functions of STANDARD C508A Transceiver
TO USE VFO MODE:
Push V/M. Confirmed by frequency numbers only (no channel
number or C) in display.
BAND cycles through 4 ranges: 100-200 MHz (108-141.995 normally
AM, other FM); 300-400; 400-520; & 700-900 MHz. Transmits
144 - 147.95 MHz & 438 - 449.995 MHz.
Repeater offset (simplex/+/-) & offset frequency are SET
functions as shown below.
Tune VFO using Dial (knob on case top). To tune in 1 MHz steps,
hold in F & tune Dial.
Squelch adjusted in SET. To override, push MONI (if in Repeatr
Mode also reverses freq).
To scan a 1 MHz range, push SC. To scan band, hold in F &
push SC. SC stops scanning.
Use Dial to change direction of scan.
TO RECALL MEMORY:
Push V/M. Memory Mode confirmed by channel no. (00-59) in
display. Select channel via Dial. To scan memories while in
Memory Mode push SC. Other scan modes via SET.
Call Channel is programmable in both 144 & 440 MHz bands.
Select band, push CALL.
TO ENTER A FREQUENCY IN A MEMORY CHANNEL:
[C508A has 60 memories (00-59) + CALL. Each holds 1 freq.
+ offset & tones or 2 receive freqs.]
In VFO Mode, select the desired frequency, offset, & tones.
Hold in F & push V/M. Use Dial to select memory channel
(00-59).
Again Hold in F & push V/M to enter frequency & return
to VFO Mode.
To program repeater offset, frequency, & tone, select
channel & use SET Mode.
To erase a memory, select channel, push SET, turn Dial to
m CLr, & push F.
SET (Menu) Functions
23 functions are controlled in Set Mode, as shown below with
initial indications. To use, push SET. Turn Dial to select
desired function. Hold in F & turn Dial to change menu
function as desired. Push SET again to set change & return
to previous mode.
St 5: Change tuning freq.step F-St 1.0: Change freq.step to
wide (1 MHz) rPt:oF: Rptr.offset on/off
t59:oF: Tone Code/Sqlch on/off CF 100.0: Set tone freq. OF
0.00: Set repeater offset freq.
SP 433.0: Sets Split Memory (allows 2 freqs. in a channel
when dUP:Of.)
SA:Of: Set Btty Save time APO:oF: Set Auto.Pwr.Off time PL:oF:
PTT Lock
FL:oF: Freq.Lock FL CH:oF: Set Dial for freq.lock beEP:on:
Beep on/off
rF 59L:oF: Set squelch to no.of S-units bnd:on: Dial changes
freq. across bands
m CLr: Clears memory CH:of: Displ shows Chan.No. instead
of freq. mm:oF: Sets chs. to scan
bm5:oF: Sets block memory scan (Block 0=Chs.00-09, 1=Chs.10-19,etc.)
Scn:P: Changes scan type
At Am:on: Sets automatic AM Mode (108-142 Mhz) Am:on: AM
on/off manually
IMPORTANT – READ BEFORE USING THIS GUIDE!
This guide has been prepared as a public service to provide,
on one page, certain limited, highly general, simplified data
about radio hobby equipment, especially for persons with disabilities
or challenges. This is not a complete manual. No one should
use any electronic or electrical equipment without first becoming
fully aware of all data in the original manual. Failure to
understand data in the original manual may result in injury
or death to the user and others, damage to the equipment,
operation in violation of FCC and other laws and regulations,
and other serious consequences. There is no warranty
of this guide’s accuracy, completeness, or conformity
to manufacturer’s standards. Its use is strictly at
the user’s discretion and risk.
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
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