| 1 of 1 | VHF communications equipment |
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| VHF communications control panel |
ACARS control panel |
VHF transceivers (3 off) in the avionics equipment bay |
Collins VHF transceiver (1 of 3 fitted) |
Internal view of the VHF transceiver |
Digital frequency synthesiser (crystal reference on the left; VCO in the screened box at the top) |
Various adjustment points (including speech compressor and squelch threshold) |
Receiver RF pre-amplifier stage (fully screened) |
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| Transmitter RF power amplifier stages |
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| Aircraft Communications and Navigation Systems |