VHF ARCS

Key Specifications:

• No aircraft modification required.
• Hand held control unit with microphone.
• Uses any air band frequency – customer specified crystal accuracy.
• Speech can be on the same channel without affecting operation.
• Normal VHF range of operation.
• Fourteen separate codes using secure DTMF system.
• Each code drives a relay which changes state each time code is received.
• Three codes also have retrigger able timed relays.
• Two resets – all relays and only delay relays.
• Universal mains power supply 90-264Vac, 47-440 Hz.
• Built in system test.
• Uses include remote switch on of landing lights and beacons at remote landing strips.

Applications:

Caledonian Airborne Systems have designed and manufactured this system and have customised it to each application. Applications have included the switching on of ground equipment from the air at remote unmanned air strips from aircraft or helicopters without the need to modify the aircraft.

The system comprises of a hand held controller situated in the aircraft, and a ground based radio receiver and decoder with built in relays. The ground station has a small speaker built in to monitor voice or code received, and LED indication of squelch, valid tones and relay status.

To test the system the hand controller is placed over a microphone on the station and a test button is pressed. The radio is bypassed and audio is injected into the decoder which will respond to the controller inputs.