Kenwood TM-741A - Manual (Page 51)

4-9. TONE ALERT SYSTEM
The Tone Alert function will provide an audible alarm
to signal when someone is transmitting on the
frequency you are monitoring. Each band can be
selected by the T.ALT function independently, and
different alarm tones are produced for each band.
During the T.ALT function you will not hear voice
communication. When used in conjunction with the
CTCSS function this would allow the transceiver to act
similar to a private pager system!
1. Adjust each SQL 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 indicator is on in the display.
3. Press the F key, then the TONE/T.ALT key. T.ALT
indicator will light.
NOTES
1. When using CTCSS the incoming signal must
be present for approximately 1 second in order
for the T.ALT to function properly.
2. If the DTSS function is used in conjunction with
the Tone Alert function. Tone Alert is activated
only when the same DTSS signal is received.
3. The tone alert function is not activated when
CTCSS and DTSS signals are on.
The transceiver will beep for approximately 5
seconds.
The time when the signal is received will be
displayed.
Up to 99 T.ALT operations are counted on the
memory channel display.
dj
^TONE^
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5. The time display is updated by each new incoming
signal.
6. During time display the T.ALT function can be
released by pressing any front panel key.
7. The T.ALT function can be released by pressing the F
key, then the TONE/T.ALT key again.
4. When a signal is present:
The T.ALT indicator will flash.
NOTES
1. You can hear a transmission when the PF key is
pressed while the Tone Alert function is activated
with the microphone PF key set to the MONITOR
switch. (MONITOR page 17 )
2. The automatic power off function works after 59
hours and 59 minutes plus one minute when it is
used with the tone alert function.
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