[Milsurplus] The AN/ARC-65

[Scott Johnson]

Guys-
I have been in the process of gathering everything I need to run both 
the ARC-21 and 65, but I am still missing the dynamotor assembly (I have 
a three phase AC supply, but would rather run it from the 
dynamamotors).  I know of one or two people interested in running this 
set, if there is enough interest, I will host a group.  Please let me 
know.  BTW, I worked on the ARC-65 for a short while in the early and 
mid eighties, and it is a trying beast, especially when it was as old as 
it was at that point.  When the ARC-190 came along and replaced it, I 
effectively forgot about working on HF radios!  I am trying to collect 
examples of every cold war HF airborne radios, the ones that still elude 
me are the ARC-80 sentry radio and the ARR-36 aux RX for the ARC-21

73,
Scott W7SVJ/AFA6SJ

BSugarberg wrote:
> Hello,
>
> The ARC-65 is an interesting radio that you never
> seem to hear about.  Does any one operate one?
> I owned an ARC-65 briefly about 20 years ago.
> I'll tell you what I remember about it:
>
> The ARC-65 was intended to mount inside the bomb
> bay of a B-52 bomber.  Accordingly, the ARC-65 was
> enclosed in a large sealed drum.  The drum was
> pressurized with 5 pounds of "dry air" (nitrogen),
> and fitted with special heaters, so that the inside
> of the drum was at a constant temperature and
> pressure.
>
> The (remote) control box was mechanical digital.
> Frequencies could be set down to .1 kc.  The control
> box was 1/2 of a wheatstone bridge.  The other 1/2
> of the bridge was inside the drum, connected to a set
> of motors.  Entering a frequency on the control box
> unbalanced the bridge.  That turned on the motors in
> the drum, and they then proceeded to rebalance the
> bridge, thus auto-tuning the ARC-65 to the desired
> frequency.
>
> 73, Bruce Sugarberg WA8TNC
> ==================
> Mike Morrow wrote:
>
>> I wonder how RCA won the contract to convert the Collins RT-311/ARC-38 
> > to the Collins/RCA RT-594/ARC-38A.
> >
> > RCA must have gained the necessary expertise when it came up with the
> > design converting the 145-pound barrel-shaped AM RT-128A/ARC-21 to the
> > USB RT-400/ARC-65.
>>
>> Mike / KK5F
>
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