[Milsurplus] Odd AN/ARC-27 box

[William Donzelli]

> I may have misunderstood your question, but the voice relay concept 
> originated late in the war in the Pacific theater, prompted by the need 
> to relay VHF voice comms back to the carrier CIC from strike aircraft 
> and others beyond line of sight range.

I had not thought of the line-of-sight problem. That makes sense.

> At any rate, the 
> November 1945 ARMN has an overview and circuit diagram of the ARC-18/28 
> that I can scan that for anyone who needs it.

Well, count me as interested.

> Again, may have misunderstood the import of your question, but one of 
> the big technology drivers for the ARC-27 was the capability for more 
> channels - not necessarily to use on a single mission, but to reduce the 
> thousands of hours of manual labor required to keep changing crystals 
> and adjustments prior to each sortie.

For the early set, I could see the big advantage. I don't see it for the 
AN/ARC-27, where programming a frequency is pretty darn easy. Then again, 
I suppose having more preset channels on an AN/ARC-27 was pretty cheap 
anyway, so why not... 

> Best 73,
> Mike