[ARC5] What the......?

[Mike Hanz]

The VHF sets had both, John, beginning with the R-112/ARC-5 and 
R-113/ARC-5.  The front end was composed of four 7 pin miniatures (three 
9003s and a 9002 oscillator) and was virtually unchanged in the R-19 and 
later sets.  There may have been a perception about greater vibration 
resistance for the lower frequency tubes, or perhaps they were less 
expensive...I can only speculate.

  - Mike  KC4TOS

On 3/14/2014 4:58 PM, J. Forster wrote:
> I wonder why they went to Loctal, rather than 7 or 9 pin miniatures? The
> smaller tubes were used in the VHF stuff.
>
> ==============
>> loctals were original in postwar ARC stuff
>>    - Gordon White