Continuous Tone Coded:squelch System (Ctcss); Rastolieateh Itivasesvesunnine Ete - Kenwood TH-235A Instruction Manual
144 mhz fm transceiver
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- Instruction manual (56 pages) ,
- Service manual (47 pages) ,
- Instruction manual (55 pages)
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CONTINUOUS TONE CODED SQUELCH SYSTEM (CTCSS)
CTCSS is available only when the optional TSU-8 unit is
USING CTCSS
installed {page 43}. CTCSS uses a subaudible tone to
;
;
:
control the squelch of transceivers, and by using this
1 Select the desired receive (RX) and transmit (TX) tone
system you can reject signals from undesired stations.
frequencies {page 13}.
Suppose that stations "A", "B", and "C" are programmed as
2 Press [F], [3] to toggle the CTCSS function ON or OFF.
follows:
e
"CT appears when CTCSS is ON.
"A": 91.5 Hz (RX/TX)
"B": 91.5 Hz (RX/TX)
"C": 100.0 Hz (RX/TX)
To communicate with only "A" and "B", select 91.5 Hz
RX/TX tone frequency.
3
When you are called:
Example 2:
The squelch of your transceiver opens only when the
"A": 100.0 Hz (RX)/ 91.5 Hz (TX)
selected RX tone is received.
oO |
"B": 103.5 Hz (RX)/ 91.5 Hz (TX)
.
"C": 107.2 Hz (RX/TX)
When you make a call:
;
Press
and hold the PTT switch.
Select 91.5 Hz RX and 100.0 Hz TX tone frequencies to
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: te
;
:
communicate with only "A", or 91.5 Hz RX and 103.5 Hz
°
The selected TX tone is superimposed on your transmitted
TX tone frequencies to communicate with only "B".
signal.
Note:
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.
TH-235E only: After selecting 1750 Hz tone frequency, you cannot
Switch the CTCSS function ON.
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