RCP 1, 2, and 3
Vhf antenna
Proximity switch electronics unit
Remote electronics unit
SELCAL decoder unit
Flight data acquisition.
Radio Communication Panel
RCP 1 supplies frequency information to the VHF 1 transceiver on an ARINC 429 bus to port A. RCP 2 supplies frequency information to the VHF 1 transceiver on an ARINC 429 bus to port B. RCP 3 can supply frequency data to the VHF 1 transceiver through RCP 1 or 2. For more information about tuning interfaces, see VHF Communication System - Tuning Interfaces.
The VHF transceiver supplies the status of the transceiver to the RCPs.
Vhf Antenna
The VHF antenna receives an RF signal from the VHF transceiver and transmits the RF signal to other airplane and ground VHF communication systems. The antenna also receives incoming RF signals and sends the RF signals to the VHF transceiver. The transceiver demodulates or detects the audio from the RF carrier signal.
External Interfaces
The VHF 1 transceiver has an interface with components from other airplane systems.
The proximity switch electronic unit sends a ground signal to increase the flight leg count to track fault history. Увеличение расширение
The remote electronics unit sends flight crew microphone (mic) audio to the transceiver to be transmitted. It also sends a PTT to start the transceiver transmit mode. The transceiver sends side tone and received audio to the REU for the flight interphone system.
The transceiver sends received audio to the SELCAL decoder. The SELCAL decoder isolates the SELCAL code from voice audio.
The
flight data acquisition unit receives a PTT from the transceiver for
key event marking.
Power
The dc bus 2 supplies 28v dc power to the VHF 2 transceiver and radio communication panel (RCP) 2.
Vhf 2 Transceiver
The VHF 2 transceiver has an interface with these components:
RCP 1, 2, and 3
Vhf antenna
Proximity switch electronics unit
Remote electronics unit
SELCAL decoder unit
Flight data acquisition.
Radio Communication Panel
RCP 2 supplies frequency information to the VHF 2 transceiver on an ARINC 429 bus to port A. RCP 1 supplies frequency information to the VHF 2 transceiver on an ARINC 429 bus to port B. RCP 3 can supply frequency data to VHF 2 transceiver through RCP 1 or 2. For more information on tuning interfaces, see VHF Communication System - Tuning Interfaces.
The VHF transceiver supplies the status of the transceiver to the RCPs.
Vhf Antenna
The VHF antenna receives an RF signal from the VHF transceiver and transmits the RF signal to other airplane and ground VHF communication systems. The antenna also receives incoming RF signals and sends the RF signals to the VHF transceiver. The transceiver demodulates or detects the audio from the RF carrier signal.
External Interfaces
The VHF 2 transceiver has an interface with components from other airplane systems.
The proximity switch electronic unit sends a ground signal to increase the flight leg count to track fault history.
The remote electronics unit sends flight crew audio to the
transceiver to be transmitted. It also sends a PTT start the
transceiver transmit mode. The transceiver sends side tone and received audio to the REU for the flight interphone system.
The transceiver sends received audio to the SELCAL decoder. The SELCAL decoder isolates the SELCAL code from voice audio.
The flight data acquisition unit receives a PTT from the
transceiver
for key event marking.
Power
The DC bus 2 supplies 28v dc power to the VHF 3 transceiver and radio communication panel (RCP) 3.
VHF 3 Transceiver
The VHF 3 transceiver has an interface with these components: