Icom IC-F21GM - Manual (Page 29)

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5
OPERATION
‘ ‘ Setting squelch level
The squelch circuit mutes the received audio signal depending on
the signal strength. Scan proceeds in sequence from lower channel
to higher channel numbers.
q While pushing [PTT] and [W/N], turn the transceiver’s power on
to enter the squelch adjustment mode.
w Push [MONI] to increase the squelch level (tight squelch) or
[W/N] to decrease the squelch level (loose squelch).
• Squelch level will be fixed after 1 sec.
‘ ‘ Auto scan function
Auto scan function proceeds in sequence from lower channel to
higher channel numbers. Scanning searches for signals automati-
cally and makes it easier to locate new stations for contact or lis-
tening purpose.
q Turn the CH select knob to CH 16. Scan starts automatically.
• When receiving a signal, scan pauses until a signal disappears.
NOTE: You can perform the scan start/stop by optional HM-75A
SPEAKER-MICROPHONE’ [Mic A] key.
‘ ‘ Wide/Narrow selection
You can easily to toggle between wide FM mode and narrow FM
mode by pushing [W/N] key.
• Push [W/N]: Turns to wide FM mode.
• Pushing and holding [W/N]: Turns to narrow FM mode.