Kenwood TM-255E - Manual (Page 52)

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Tone Alert provides an audible alarm to indicate when
someone is transmitting on the frequency you are
monitoring.
Tone Alert is an effective partner with CTCSS, Page,
or DTSS. When the correct signaling comes through,
your transceiver alerts you of an incoming call from a
specific station. If using any of these functions with
Tone Alert, the CTCSS/Tone frequency and the
DTSS/Page code must match those programmed in
your transceiver or else Tone Alert is not activated.
Tone Alert can only be used with FM mode.
ENABLING TONE ALERT
1 Tune to the prearranged frequency.
Note:
♦ APO turns OFF the power if no key entry is made for 180
minutes even if Tone Alert is ON.
♦
If Tone Alert is ON, there is no speaker output except the alarm
tone when a signal is received. To hear activity on the
frequency without disabling Tone Alert, program one of the
microphone PF keys or Front Panel [Pf^ for the Monitor
function {page 35}.
♦
For Tone Alert to function correctly with CTCSS, the incoming
signal must be present for approximately 1 second.
♦
If you find Tone Alert does not work reliably, your receive signal
may contain distortion or a high level of ignition noise. One
remedy is to install a TSU-8 CTCSS unit and select a Tone of
141.3 Hz or lower to act as a filter.
Activate CTCSS, Page, or DTSS if you want to use
these together with Tone Alert.
Press [F], [TONE].
• A "bell" icon appears.
• Each time this key combination is pressed.
Tone Alert toggles ON and OFF.
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When the correct signal is received, you hear 5
double beeps, the "bell" icon starts blinking, and
the Call Number increments.
• The Display shows the number of minutes and
seconds elapsed after the last signal was
received. After 59 minutes 59 seconds pass,
the Display changes to 01.00 and continues
counting. After 59 hours 59 minutes pass,
counting stops. When the next signal is
received, the time resets to 00.00 and counting
continues. Each time a new signal is received,
the time resets to 00.00.
• The Call Number records the number of calls
received to a maximum of 99.
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5 Exit Tone Alert by pressing [PTT].
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