Tone Squelch Operation - Icom IC-705 Advanced Manual

2. ADVANCED OPERATIONS

Tone squelch operation

FM mode
The Tone squelch opens only when you receive
a signal that includes a matching subaudible tone
in the FM mode. You can silently wait for calls
from other stations using the same tone.
When you transmit, the tone frequency is
superimposed on your own signal.
1. Push .
• Opens the FUNCTION screen.
2. Touch [TONE].
3. Touch the Tone squelch type.
(Example: TSQL)
4. Touch [TONE] for 1 second.
5. Rotate to set the tone frequency.
About the Tone squelch types indication
TSQL: Tone Squelch function
DTCS(T)/TSQL(R) ("D" in "D-TSQL" blinks):
DTCS code in TX, Tone squelch in RX
TONE(T)/TSQL(R) ("T" in "T-TSQL" blinks):
Repeater tone in TX, Tone squelch in RX
Checking another station's tone frequency
You can check another station's tone frequency
by tone scanning while the station is transmitting.
1. Touch [T-SCAN].
Blinks while scanning
• The scan starts, and then stops when the
matching tone frequency from the other station
is received.
2. To close the TONE FREQUENCY screen,
push .
Selectable tone frequencies
67.0 88.5 114.8
69.3 91.5 118.8
71.9 94.8 123.0
74.4 97.4 127.3
77.0 100.0 131.8
79.7 103.5 136.5
82.5 107.2 141.3
85.4 110.9 146.2
2-13
151.4 177.3 203.5 250.3
156.7 179.9 206.5 254.1
159.8 183.5 210.7
162.2 186.2 218.1
165.5 189.9 225.7
167.9 192.8 229.1
171.3 196.6 233.6
173.8 199.5 241.8