Selected Functions of KENWOOD TM-251A Transceiver
TO USE VFO MODE:
Push VFO. Confirmed by frequency only (no channel no. or C)
Select BAND by pushing F, then pushing REV. Main Band covers
118-174 MHz. UHF Subband (U+ in Display) covers 300-470 MHz,
Enter frequency by Tuning Dial or Up/Down buttons on microphone.
Offset automatically set; to change, push SHIFT to step among
Simplex, +, and -.
To scan frequency, hold in VFO for 1 second. Any key stops
Scanning is normally up in frequency; use Dial or Up/Down
to reverse direction.
TO RECALL MEMORY:
Push MR. Memory Mode confirmed by a channel number (1-40)
Select channel using Tuning or Keypad or Up/Down buttons on
To scan memories, hold MR for 1 second. Any key but DTMF stops
To lock out a channel from scan, select it & hold LOW
1 second. Same deselects.
To select Call Channel, push CALL (leftmost button on microphone).
TO TRANSFER A MEMORY FREQUENCY TO VFO: Push F, then VFO.
TO ENTER FREQ BY MIC [Menu B, No. 50, must be ON; correct
BAND must be selected]:
Push A, then enter freqncy via DTMF buttons. On VHF, the 1
is already entered.
TO ENTER A FREQUENCY IN A MEMORY CHANNEL:
Select characteristics (frequency, offset, subaudible tone,
etc.) in VFO Mode.
Push F. A memory channel number will appear.
Use Tuning or Up/Down to select the desired memory channel
(1-40). (Standard repeater offset is automatically set. To
change, hold MR 1 second. "+ -" appears. Use Tuning
or Up/Down to select transmit frequency.)
Push MR again. The memry frequency is stored & unit returns
to previous mode.
To select Call Channel, select characteristics in VFO Mode,
push F, then CALL. (Standard repeatr offset automatically
set. To change, hold CALL 1 second. "+ -" appears.
Use Tuning or Up/Down to select transmit freq.) Push CALL
TO SET AND USE SUBAUDIBLE TONE:
Push F, then TONE/CTCSS. "Tone" blinks and current
tone frequency appears.
Use Tuning or Up/Down to select one the 39 available subaudible
Push any button to store the tone and return to previous mode.
Push TONE/CTCSS to cycle among Off, Tone (on transmit only),
TO REVERSE TRANSMIT & RECEIVE FREQUENCIES:
Push REV. Same deselects.
TO OVERRIDE SQUELCH:
Push PF (rightmost button on microphone). Same deselects.
TO SET POWER:
LOW cycles among High (No Indication), MID, and LOW power
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.
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