Tone Squelch Operation - Icom iC-7850 Instruction Manual

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■ Tone squelch operation

The tone squelch opens only when you receive a sig-
nal containing a matching subaudible tone in the FM
mode.
You can silently wait for calls from others using the
same tone.
When you transmit, the tone frequency is superim-
posed on your own signal.
Push a band key to select a desired band.
q
Push the Mode key [AM/FM] to select the FM
w
mode.
• "FM" is displayed.
Push the Multi-function [TONE](
e
the Tone Squelch function.
• "TSQL" is displayed.
• Pushing the Multi-function [TONE]() key toggles the
tone setting between "TONE," "TSQL," and OFF.
Hold down the Multi-function [TONE](
r
second.
• The Tone frequency screen is displayed.
Push [ p](F) or [q](F) to select the "T-SQL TONE"
t
item.
Rotate [MAIN DIAL] to select the desired tone
y
squelch frequency.
• The selectable tone frequencies are listed below.
• Hold down [DEF](F) for 1 second to select the default
setting.
• Pushing [T-SCAN](F) toggles the Tone Scan function
ON and OFF.
Push the Multi-function [TONE](
u
• Exits the Tone frequency screen.
• When the received signal includes a matching tone,
squelch opens and the signal can be heard.
Operate in the normal way.
i
• When you transmit, the tone frequency is superimposed
on your signal.
• Selectable tone frequencies
67.0 085.4 107.2
69.3 088.5 110.9
71.9 091.5 114.8
74.4 094.8 118.8
77.0 097.4 123.0
79.7 100.0 127.3
82.5 103.5 131.8
) key to turn ON
) key for 1
(p. 12-10)
) key.
165.5 186.2 210.7
136.5
141.3 167.9 189.9 218.1
146.2 171.3 192.8 225.7
151.4 173.8 196.6 229.1
156.7 177.3 199.5 233.6
159.8 179.9 203.5 241.8
162.2 183.5 206.5 250.3
() Multi-function keys
(F) Function keys
• Tone squelch function ON
• Tone frequency screen
(unit: Hz)
254.1
5-39
RECEIVE AND TRANSMIT
Mode keys [MAIN DIAL]
5