[Milsurplus] ARC-5 Mobile

[Mike Morrow]

>I'm starting to contemplate taking a stock AN/ARC-5 mobile so people can 
>see and hear it.  This would be a single transmitter and receiver, 
>probably on 75 meters, plus an MD-7 modulator, RE-2 antenna relay, and 
>control boxes as needed.

Hi Al,

One of the nice things about an authentic AN/ARC-5 *single* MF/HF transmitter installation is that the transmitter control box is then *completely* superfluous.  There's no need for a transmitter select switch, and the standard installation was always VOICE mode so there's no need for a mode switch.  Therefore, neither the very very rare C-29/ARC-5 MF/HF control box nor the much more common C-30 or C-30A/ARC-5 MF/HF and VHF control box is required.  The J-16 or J-22 audio jack box *may* be needed to provide connection for the mic and receiver phone jacks.

The AN/ARC-5 single transmitter (T-19/ARC-5) aircraft installation that I've seen had only a microphone jack for an RS-38, plus a RADIO-INTERPHONE switch to direct mic audio to either the radio (MD-7) or the interphone circuit.  The interconnecting wiring was configured to permanently energize the SELECT relays for the transmitter and put the MD-7 into VOICE mode.  The mic PTT button was the *only* transmitter control!

This same installation also used a R-23/ARC-5 beacon band receiver and a R-26/ARC-5 HF receiver, each tuned using a C-125/ARC-5 control panel which is internally wired to permanently select VOICE mode when connected to standard receiver interconnection wiring.  The mic and headphone jacks were installed on the aircraft instrument panel, so not even a J-16 or J-22 audio jack box was required.

An installation as described above is completely authentic, and saves trying to dig up an impossibly rare C-29 with MT-80 and rare A.R.C. 9585 connector, or a J-16 with MT-78 and rare A.R.C. 9821 connector.

Mike / KK5F