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Operating Instructions
Page 36 Issue 05/2000
Additional information
l
A speech test is to be performed before startup and it should be no-
ted that if the speech test is carried out close to the portable VHF sta-
tion the results may be positive even if the antenna cable is broken or
short-circuited. At a distance of 5 to 10 km no connection will be
made.
l
Use a loud voice for speech communication and hold the micropho-
ne close to the lips. Otherwise noise can be intrusive and make un-
derstanding difficult.
l
Use only microphones or headsets which are suitable for use in air-
craft. Incoming radiation on the equipment antenna can affect the in-
tegrated amplifier of the microphone (feedback). This is noticeable
in the portable VHF station by whistling and/or heavy distortion. The
described disturbances can occur in different ways on the different
transmission channels.
l he PTT (press to transmit) button can stick and cause continuous
transmission. Therefore, when transmitting observe the arrow in the
top line on the left next to the active frequency display and check that
when the PTT is released the arrow disappears.
l
The fuse may be replaced only by the specified fuse, otherwise un-
controlled damage can occur at the VHF transceiver.
Becker GK 415 - ( )
Issue 05/2000 Page 5