1-53
VHF COM
96.
A Garmin SL40 VHF transceiver is installed and designated as COM 1 on the audio
panel. Information on the key functions of the Garmin SL40 is incorporated into the Pilot’s
Checklist, Emergency Procedures and Operating Data and is described below.
Refer to Annex
B for more detailed operating instructions
.
Figure 1-61 VHF COMM
a.
Power / Volume / Squelch
- The knob on the left side of the SL40 controls power
on/off, volume, and squelch test. Rotate the knob clockwise (CW) past detent to
turn the power on. Rotate the knob to the right to increase volume. Pull the knob
out to disable automatic squelch;
b.
Large / Small Knobs
- The dual concentric knobs on the right side of the SL40
are used to select frequencies or to view the features available within a function;
c.
Flip Flop Button
- Press the Flip/Flop button to switch between the active (left-
most) and standby (rightmost) frequency on the display. Switching between
frequencies is disabled when transmitting;
d.
EC Button
- Press the EC button to load the Emergency Channel (121.500 MHz)
as the standby frequency. The Monitor function is automatically enabled when the
EC feature is exercised;
e.
MON Button
- Press the MON button to listen to the standby frequency. When
the active frequency receives a signal, the unit will switch automatically to the
active frequency;
f.
RCL Button
- Press the RCL button to retrieve stored frequencies.
g.
MEM Button
- Press the MEM button to store the displayed Standby frequency in
memory.
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