Using ctcss, When you make a call, M automatic tone frequency id – Kenwood TM-261A User Manual
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CONTINUOUS TONE CODED SQUELCH SYSTEM (CTCSS)
CTCSS is available only when the optional TSU-8 unit is
installed {page 54}. CTCSS allows you to choose which
stations will receive your transmissions. Suppose that only
stations “A”, “B”, and “C” are programmed with the same
RX Tone frequency, and this frequency is identical to the TX
Tone frequency. When “A” calls, the squelch on only “B”
and “C” opens. Or, these same stations could be
programmed as follows:
“A”: 91.5 Hz (RX)
“B”: 100.0 Hz (RX) / 91.5 Hz (TX)
“C”: 103.5 Hz (RX) / 91.5 Hz (TX)
In this example, “A” can call either “B” or “C” individually by
selecting 100.0 Hz TX Tone or 103.5 Hz TX Tone.
USING CTCSS
1 Select the desired RX and TX Tone frequencies
(page 23}.
2
Repeatedly press
[TONE]
until “CT’ appears on the
Display. Each press of
[TONE]
switches through the
choices shown below.
8]
No Indicator
TONE
(‘T")
CTCSS
("CT")
• The CTCSS indicator does not appear if the CTCSS unit is
not installed.
When you are called;
The squelch of your transceiver opens only when the
selected RX Tone is received.
When you make a call;
Press and hold microphone
[PTT].
* The selected TX Tone is superimposed on your
transmitted signal.
Hole: When using DTSS with CTCSS, the squelch opens only If the
correct Tone is received and the received DTSS code matches the code
stored in your transceiver.
m
Automatic Tone Frequency ID
This function automatically identifies the incoming Tone
frequency on a received signal.
1
Press
[TONE] (1 s)
to toggle the function ON or
OFF.
•
A Tone frequency display replaces the frequency
display and the 10 kHz decimal begins blinking.
•
When a signal is received, the transceiver begins
scanning through all Tone frequencies in order to
identify the Tone frequency that is being received.
When the frequency is identified, an alarm beeps, and
the Display begins blinking.
2 Press any key to cancel the function.
•
When OFF is selected for ‘TONE.RX” in Menu B
(page 17}, the Tone frequency selected for ‘TO” in
Menu A is replaced by the Tone frequency
automatically identified in Step 1.
•
When any Tone frequency is selected for ‘TONE.RX”
in Menu B (page 17}, this frequency is replaced by the
Tone frequency automatically identified in Step 1. The
Tone frequency selected for TO” in Menu A is not
changed.
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