FSG 70/FSG 71M
O
PERATION
M
ANUAL
Reprint July 1998
Page
1 - 1
W. Dittel GmbH
Section I
Safety Information
Every radio, when transmitting, radiates energy into the atmosphere that may, under
certain conditions, cause the generation of sparks. All users of our radios should be
aware of the following warning:
Do not operate this radio in an explosive atmosphere (petroleum fuels,
solvents, dust, etc.)!
During normal use, the radio will subject you to radio frequency energy substantially
below the level where any kind of harm is reported.
TO ENSURE PERSONAL SAFETY,
please observe the following simple rules
:
•
DO NOT
transmit when the antenna is very close to, or touching, exposed parts of the
body, especially the face and eyes.
•
DO NOT
transmit on a busy channel.
•
DO NOT
press the transmit (PTT) key when not actually desiring to transmit.
•
DO NOT
transmit in closed aircraft or vehicles with the antenna inside the cabin. This
may cause malfunction of the avionics or trigger the airbag! Always operate the radio
FSG 70/71M
with a suitable outside / external antenna! Assure appropriate lightning
protection where elevated outdoor antennas are used.
•
DO NOT
operate the radio whilst driving. It should also be noticed that the use of a
hand held microphone while driving could constitute an offence under the Road Traffic
Regulations in certain countries.
•
DO NOT
allow children to play with any radio equipment containing a transmitter.
•
Always switch OFF the radio first when installing the unit into vehicles, aircraft or
carrier cases or when removing from it!
•
Always switch OFF the radio first when starting an engine or vehicle!
•
When operating the
FSG 70/71M
on a 24/28Vdc source a suitable Voltage Converter
24Vdc/12Vdc of at least 4 Amps must be used!
•
The
FSG 70/71M
may be used exclusively for communication on the airband
frequencies.
•
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 a suitable noise canceling microphone or headset for aircraft
radios shall be used.
•
A backup microphone should always be carried 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 70/71M
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. But 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
yellow TX LED at the
FSG 70/71M
. This TX LED must go off when releasing the PTT
key.
•
Replace blown fuse only against correct type with specified nominal value. Investigate
the cause.
