[Milsurplus] BC 650A?

[Mike Morrow]

This item was brought up on this list on 1 May 2010:

> I attended the MRCG at San Luis Obispo this weekend and picked
> up an odd little receiver. It's marked BC-650-A and is a two
> channel receiver> that >uses 2 acorn tubes and two 1D8 GT tubes.

I responded:

> It's a test receiver for the Mark II IFF system transponder
> SCR-535-A. This WWII IFF system was very quickly replaced
> by the Mark III (SCR-595-A and ABK) and Mark IIIG (SCR-695-A
> and ABF) system. Mark II IFF components are thus rare, but
> not much in demand either.
> Mike / KK5F

Robert continued:

> More specifically it's part of Instrument Equipment IE-16
> used to work on the Mark II.  I have an Operator's Manual
> on the Mk II and IE-16 somewhere but it's misfiled and I
> couldn't locate it tonight.
>
> Further on Mike's "not much in demand" comment, the few IFF
> collectors around probably already have everything and the
> aircraft restorers that might become interested in any
> Mk II components are seldom interested in support
> equipment that wasn't installed in the aircraft.

-----Original Message-----
From: Mark M via Milsurplus 
Sent: Aug 2, 2018 1:18 PM

> Saw one at a swap. No idea what it did. Anyone know?
>
> Pic. https://sites.google.com/site/bc650aphoto/bc-650a
>
> AF6IM