Becker Avionics
Operation
Receive and Transmit Mode
DV17551.03 Issue 03 June 2020
RCU6512
47
3.4 Receive and Transmit Mode
Receive Mode
•
If /PTT (Push To Talk) input is inactive, the transceiver remains in receive
mode.
•
In receive mode the line output signal consists of:
o
Received signal from antenna.
Transmit Mode
•
If PTT input is active (PTT=Push To Talk key is pushed) the transceiver
changes to transmit mode.
o
Microphone or LINE_IN signal can modulate the transmitter.
•
The "TX" symbol shows the device is in transmitting mode.
•
The sidetone (demodulated audio of the emitted signal) is available on the
headphone output.
•
In transmit mode some user actions such as change of frequency selection
mode or channel, which are normally allowed in receive mode, are blocked.
(As an exception in standard mode the "Preset" frequency is changeable,
even during transmission).
•
Notice:
Transmit mode is automatically stopped (return to receive mode) after 30 s of
continuous transmission.
"FAILURE" is shown, see "Warning and Failure Indications", page 57.
118.005
127.000
TX
