Flightcom Classic ANR User Manual page 3

O P E R A T I O N A L T I P S
If the aircraft does not have a built-in push-to-talk (PTT) switch, a portable
PTT switch must be installed in order to use the radio. The master gain con-
trol located in the aircraft radio should be optimized by an avionics technician
whenever adding a new model microphone to the system.
T R O U B L E S H O O T I N G
Feedback (Squealing):
• The mic boom should always be worn from the left side. Speaker place-
ments in this ANR system are calibrated for this configuration. Wearing the
mic boom from the right may result in feedback (squealing).
• Be sure the ear seals are against the head on both sides.
• The electronics and acoustical cavity of the ear cup were tuned to the
characteristics
we recommend that you only
ment parts when performing recommended annual
maintanance. Installing incorrect ear seals may result in inproper
fit and feedback (squealing).
Volume too loud (or soft) in one ear dome:
Adjust volume using control knob on each ear dome to achieve comfortable
volume balance.
No sound in one ear dome:
Switch to "M" on the M/S (Stereo/Mono) switch next to clip on ANR battery
pack.
Blinking red LED on battery pack:
Battery voltage is low and needs replacing.
No light on battery pack:
ANR is switched off, or battery needs replacing.
of the Flightcom
use Flightcom
ear seals,
h y g i e n e
and
replace-