Enhanced Receiver Function; The Tonealert System - Kenwood TH-28A Instruction Manual

ENHANCED RECEIVER FUNCTION
1 The Tone Alert System
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The Tone Alert function provides an audible alarm to
indicate when someone is transmitting on the
frequency you are monitoring.
If you set the T.ALT function you will not hear voice
communications. When used in conjunction with the
CTCSS function, this allows the transceiver to
operate similar to a private paging system.
The Automatic Power Off function is disabled during
T.ALT operations.
Adjust the squelch control to respective threshold.
Select the proper tone frequency and be sure the CT
indicator is displayed if you will be using the CTCSS
function.
Press the F key, then press the O key. The T.ALT
indicator will appear on the display.
4 The T.ALT and BUSY indicators display and the
transceiver beeps on and off for approximately 5
seconds when a signal is present.
5 The time when the signal was received will be
displayed. The time is changed each time a new
signal is received.
Oo
Press the PTT switch to release the T.ALT function.
N
Press the F key, then press the 0 key again to
completely release the T.ALT function.
Note
For the T.ALT to function properly in CTCSS, the
incoming signal must be present for approximately
1 second. If you use the DTSS or Paging function
in combination with the Tone Alert function. Tone
Alert is activated only when the proper signal is
received.
Selecting a Beep Sound
Press and hold the TONE key and turn on the
POWER switch to alternate the beep sound between
a tone alarm and telephone type ring.