Piper ARCHER III Pilot Operating Handbook page 307

PA-28-1 8 1 , ARCHER ID
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SECTION 4 - NORMAL PROCEDURES (continued)
Adjusting the Intercom and Headsets (continued)
7.
While speaking loudly, adjust the ICS volume controls on the Garmin
audio panel to set the pilot and copilot volumes to a comfortable level.
The Flightcom 403 ICS volume should then be adjusted to set passenger
ICS volumes.
Adjusting the Squelch Control
To adjust the squelch control:
While no one is talking, turn the intercom Squelch control knob as far
I.
clockwise as possible while still blocking background noise.
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Re-adjust the setting in flight to compensate for different noise levels.
2.
Radio Transmission
To transmit on the radio as the co-pilot and/or passengers, push the PTT switch
associated with your headset plug-in panel. Only the person whose push­
to-talk switch is depressed will be heard over the radio. No other intercom
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conversations will be transmitted over the radio at that time.
ISSUED: December 22, 201 7
Noise canceling microphones will not operate
correctly if they are more than l/8" from the
mouth.
If you set the squelch too high by turning the
Squelch control knob counterclockwise, your
voice will be cut out unless you talk very loudly;
if you set the squelch too low by turning the
Squelch control knob clockwise, the background
noise will be heard occasionally. The intercom
will not interfere with normal use of the radio and
will allow passengers to hear the aircraft radio and
sidetone.
If your push-to-talk switch fails, you can use the
existing handheld microphone to talk on the radio
while listening over the intercom.
NOTE
NOTE
NOTE
SECTION9
SUPPLEMENT 5
REPORT: VB- 2 74 9
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