Icom IC-F620 Programming Software Manual page 61

Row Description
Audio Filter Select "300-3000Hz," "0-3000Hz," "300-3400Hz" or "0 –3400Hz". Select
different pass characteristics for the audio filter for special purpose
applications.
Mic Gain Select "1 Min" through "5 Max". Increases or decreases microphone gain
for special purpose applications.
When done editing in this programming screen you can proceed to other programming
screens, save your programming parameters to a file or proceed to writing the
information to the radio (assuming that editing has been finished for all other required
programming screens also).
CS-F620TR Programming Software Manual Set Mode Programming Screen
(rev 1.0) -
Default
300-
3000Hz
3
58