22
Adjusting the volume
1. Rotate the
DIAL
knob to adjust the volume to a com-
fortable level.
Adjustment is possible for A band (upper) and B band
(lower).
Adjusting the squelch level
Annoying noises can be muted when a signal cannot be detected. Normally, use the fac-
tory settings, but adjust the squelch if noise is harsh.
1. Press the [
SQL
] key, and then rotate the
DIAL
knob to
adjust to a level at which the background noise is mut-
ed.
appears on the display.
Adjustment is possible for A band (upper) and B band
(lower).
2. After the adjustment, press the [
SQL
] key again, or do
nothing for about 3 seconds, the SQL meter will return
to the VOL meter.
When the squelch level is increased, the noise is more likely to be silenced, but it may become
more difficult to receive weak signals.
Changing the operation band
FTM-300DR/DE has two operating bands displayed in two frames, (top and bottom) and
can receive both bands simultaneously. It can be changed by operating the frequency or
communication mode of the band selected either up or down.
The band displayed with large white numbers is called the “operation band”, and the band
that is not the operation band is called the “sub-band”.
The reception of the C4FM digital signal gives priority to the operation band side. A band and
B band C4FM digital signals cannot be heard simultaneously.
1. Each time the [
A/B
] key is pressed, the operation band
switches between “A band (upper)” and “B band (low-
er)”.
