FM Bandwidth & TX Deviation Level
You can reduce the receiver bandwidth and microphone deviation level when operating
on tightly-clustered frequencies (channel spacing of 12.5 or 15 kHz). This will reduce the
transmitter deviation, thus minimizing interference to other users.
To configure for the narrower bandwidth, use the following procedure:
1. Press and hold in the [
MHz
(
SET
)] key for one second,
then rotate the
DIAL
knob to select “
59 W
/
N DV
”.
2. Press the [
MHz
(
SET
)] key, then rotate the
DIAL
knob to
change the display to “
NARROW
(±2.5 kHz Deviation, 6
kHz Bandwidth)”.
3. Press and hold in the [
MHz
(
SET
)] key for one second to
save the new setting and exit to normal operation.
4. To return to wide bandwidth and deviation, repeat the
above procedure, selecting “
WIDE
(±5 kHz Deviation, 15 kHz Bandwidth)” in step 2
above.
MIC Gain Setting
At the factory, a microphone gain has been programmed that should be satisfactory for
the supplied
MH-48
A6J
Microphone. If you use an after-market microphone or connect a
TNC, you may wish to set a different Mic Gain level, using Set Mode item “
27 MCGAIN
”.
1. Press and hold in the [
MHz
(
SET
)] key for one second,
then rotate the
DIAL
knob to select “
27 MCGAIN
”.
2. Press the [
MHz
(
SET
)] key, then rotate the
DIAL
knob to
set the desired level (Default:
LVL 5
).
3. Press and hold in the [
MHz
(
SET
)] key for one second to
save the new setting and exit to normal operation.
Remember to readjust the default microphone input level to
“
LVL 5
” when using the supplied
MH-48
A6J
Microphone.
57
Miscellaneous Settings
FT-2980R/E Operating Manual
