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OTHER OP-3
SWITCHING FM/AM MODE
This transceiver is also capable of receiving (not transmitting) in
AM on band A. The default mode on the 118 MHz band is AM
while the default on the 144, 220, 300, or 430/440 MHz band is
FM.
1 Enter Menu mode and access Menu 102.
2 Set the mode to AM, FM, or NFM.
Note: You cannot switch between FM and AM to receive on band B.
ADVANCED INTERCEPT POINT (AIP)
The VHF/UHF band is often crowded in urban areas. AIP helps
eliminate interference and reduce audio distortion caused by
inter modulation. You can use this function only while operating
on the VHF/UHF band.
1 Enter Menu mode and access Menu 103 (VHF.AIP) and/or
Menu 104 (UHF.AIP).
2 Set the AIP to ON or OFF.
S-METER SQUELCH
S-meter Squelch causes the squelch to open only when a signal
with the same or greater strength than the S-meter setting is
received. This function relieves you from constantly resetting the
squelch when receiving weak stations that you have no interest
in.
1 Enter Menu mode and access Menu 105.
2 Set the S-Meter squelch to ON or OFF.
3 To select the desired S-meter setting, rotate the left (band A)
or right (band B) SQL control depending on which band you
have selected.
• The squelch will open only at the level you have selected (for
example, level 9).
■ Squelch Hang-up Time
When using S-meter Squelch, you may want to adjust the
time interval between when the received signals drop and
when the squelch closes.
1 Enter Menu mode and access Menu 106.
2 Set the hang-up time to 125, 250 or 500 ms, or OFF.
SPEAKER MUTE
While receiving or transmitting on the TX band, you may not want
to hear audio received on the other band. Use this function to
mute the speaker allocated to that band (not the TX band).
While receiving, press [F], [MUTE] to switch the mute function
ON or OFF.
• The icon appears on the display when the function is ON.
■ Mute Hang-up Time
When using Speaker Mute, you may want to adjust the time
interval between when you receive a signal and when the
speaker is muted.
1 Enter Menu mode and access Menu 107.
2 Set the hang-up time to 125, 250, 500, 750, or 1000 ms.
BEAT SHIFT
Since the transceiver uses a microprocessor to control various
transceiver functions, the CPU clock oscillator’s harmonics or
image may appear on some spots of the reception frequencies.
In this case, we recommend you turn the Beat Shift function ON.
1 Enter Menu mode and access Menu 108.
2 Set the Beat Shift to ON or OFF.