[ARC5] ARC-39

[David Stinson]

HF aircraft radio continues to this very day.  It was still very active 
outside the U.S. in the 60s.
That said, HF's long service in aircraft is finally in its twilight.  
When we sacrifice enough human lives to the God of Technological 
Advance, maybe they'll rethink casually discarding simpler systems that 
have worked for 100 years.  But I doubt it.

On 5/2/2020 12:59 PM, Scott Johnson wrote:
>
> I figured there has been a lot of talk lately about various ARC-5 
> precursors and derivatives. But not much talk about one of the coolest 
> of ARC’s creations, the ARC-39.
>
> Here you have the equivalent of a full complement of ARC-5 HF gear in 
> one 1 ATR ARINC box, with presets, and internal power supply.  
> Everything you needed for a command radio function, about ten years 
> too late.  I often wonder what the Navy did with this radio.  It was 
> apparently deployed on training aircraft such as the T-34, T-2, etc., 
> as well as the P3A and UH-43. I have three examples, all were built 
> under a 1959 navy contract. Does anyone know why this radio was 
> contracted?  I sure is cool, with 12 preset crystal controlled 
> channels in the 2-9.1 MHz range, two 6159s (28V heater  6146) 
> modulating one 6159. Balance of tubes are 7/9 pin miniature. Modular 
> construction, typical very high quality gold plated ceramic wafer 
> connectors internally. 10-15W carrier with 95% plus modulation.  Can 
> be operated locally or remotely.  Very sensitive, selective receiver.  
> Any old Navy Airedales out there that know anything about the 
> application of this set?  Seems much too late for HF interplane or air 
> to ground.
>
> Scott V. Johnson W7SVJ
>
> 5111 E. Sharon Dr.
>
> Scottsdale, AZ 85254-3636
>
> H (602) 953-5779
>
> C (480) 550-2358
>
> scottjohnson1 at cox.net <mailto:scottjohnson1 at cox.net>
>
> scott.johnson at ieee.org <mailto:scott.johnson at ieee.org>
>
>
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