FSG 90 System
1 Safety Information
December 2014
FAV_D10024
3
Unauthorized modifications and changes of the system
are
forbidden
.
When replacing defective parts use only original spare parts or
standard parts recommended by the manufacturer!
In aircraft or vehicles, use a suitable noise cancelling microphone
or headset for aircraft radios.
Always carry a backup microphone during any flight. Even new
microphones can fail.
Volume is very important. Increasing speaking levels while the lips
are facing the microphone, but not straining or pushing to yelling
levels will increase clarity.
Prior to any flight, verify proper
FSG 90(X)
functions by means of a
short communications test. It has to be taken into account that with
a faulty antenna or cable this COM test may absolutely turn out
positive at the airfield or in short distance to the ground station.
However, at a distance of 2 to 6 miles faulty antenna and/or cables
will cause communication breakdown!
Push-to-Talk keys may stick occasionally. Therefore, observe
while transmitting the transmit (TX) symbol at the
FSG 90(X)
display. This TX symbol must disappear when releasing the PTT
key. After 2 minutes continuous TX the built-in transmit time out
timer disables the transmitter in order to avoid continuous channel
blocking. Then, the whole display warns by continuous flashing.
Refer to appropriate hints in this manual.
Replace blown fuse only against correct type with specified
nominal value. Investigate the cause.
In this manual the following symbols are used:
DANGER!
describes an immediate threatening danger! Failing to observe the
note may cause death or heaviest injuries.
CAUTION!
describes a special note for operation. Failing to observe the note
may cause damage of the transceiver and/or stored data may be
deleted!
IMPORTANT!
describes explanations and other useful hints. Failing to observe
the note may cause degraded performance and/or unsatisfying
operation!
Summary of Contents for FSG 90
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