Revision 12.2
Jan. 2016
29 / 61
3.6 Transmitter Operation
The unit transmits on the active frequency (upper line) as long as a PTT
(press to talk) switch is pressed.
Transmission
Reception
„TX“ indicates normal transmitter operation.
„RX“ indicates a receiver operation.
In the lower left corner of the display the carrier modulation is dynamically
displayed. It corresponds to the side tone which is not available on gliders
when no earphones are in use.
In order to avoid the blocking of the frequency by unintentional long
transmissions (stuck microphone) the transmitter is switched off after two
minutes and the display changes from „TX“ to „Te“. To resume
transmission the PPT switch first must be released and then be pressed
again.
While transmitting the external audio input will be turned off automatically.
The microphone selection is dependent upon the pre-setting of the TXm-
activation.
The differential speaker output will be turned off to prevent an audio
feedback to the microphone. The speaker also will be disabled if the
intercom (VOX) is active.
The output for the headset will carry the side tone.
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