[Milsurplus] Re: [ARC5] NIB Navy AN/ABA-1

[Marty Reynolds]

Tossed around....

> It's ABA-1, rather than AN/ABA-1.  But it is the Navy version of the
> SCR-515,
> which is the Mark IV IFF system which was held in reserve during WW-II in
> case the Mark III was ever compromised.  Apparently that didn't happen so
> most of
> the radios and dynamotor/encoderss* that turn up are unused.
>

Hams usually called 'em BC-645s.  Some reportedly shipped with explosive
squibs still intact.  QST, which treated surplus at arm's length, even
editorialized to NEVER apply power to J4, pin 7 (or something) unless
you've clipped all the little dangling things that look like bypass
capacitors.

That "round triode" is a WE 316.  Converted '645s was the way 420mhz
was 1st ham-populated.

   'rm

*codewheel attatched to PE-101 dyno who's speed was controlled by a
 carbon-pile regulator.  But Mk-III iff, aka BC-966 180-210mhz iff
 transponder, sed "radio receiver" on dog-tag.

 AND  ON  FAKE  RADIO  RECEIVER  LABEL!  AN/APG-5's B-17/24 radar
 bombing analog computer was also called a "radio receiver."

 Brings up question "who was zooming who"