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

[J. Forster]

Yes on the VHF sets. My question is more why d0 they need the big tubes
for the IF and audio? Maybe just 'tradition'?

-John

===============


> 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
>
>