Tone Alert System - Kenwood TM-231A Instruction Manual

3. The transceiver will remain
keyed for approximately 2
seconds after you press
each number, so you can
release the PTT switch
without unkeying the tran-
sceiver.
Note:
Some repeaters will require
the use of a special key se-
quence to activate the Au-
topatch function. You should
check with your control oper-
ator for this sequence.
30
Audio tones
(Hz)
1209
1336
1477
1633
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se |CO |m jw oC |O |m |>
4-7. Tone Alert System
The Tone Alert function will provide an audible ''Alarm'"' to
signal when someone is transmitting on the frequency you
are monitoring. When used in conjunction with the CTCSS
function this would allow the transceiver to act similar to
a private pager system !
1. Adjust the SOL control to the threshold point.
2. If you will be using the CTCSS function you should select
the proper tone frequency and ensure the CTCSS indi-
cator is on in the display.
3. Press the F key and then the TONE/T.ALT key. The T.ALT
indicator will light.
4. When a signal is received that will open squelch the fol-
lowing actions take place:
The T.ALT indicator will
begin to flash.
The busy indicator will turn
on.
The audio alarm will sound.
Note:
When using the CTCSS function the incoming signal must
be present for approximately 2 seconds in order for the
T.ALT to function properly.
Tone Alert System can not use in conjunction with Scan.
5. The T.ALT function can be released by pressing the F
key and then the TONE/T.ALT key again or by pressing
the PTT switch while the T.ALT indicator is flashing.