[ARC5] [Milsurplus] Identify this aircraft freq meter? (RC-12 oscillator equipment)

[Mike Hanz]

On 5/13/2015 12:30 PM, Mike Morrow wrote:

> The Signal Corps General Catalog describes this system as:
>
> RC-12 Oscillator Equipment
>
> It was, as Dave says, stated in the catalog as providing for reception of unmodulated signals as an optional addition to Observation and Liaison sets:
>
> SCR-AA-185  (BC-AD-219 receiver, BC-AA-191 transmitter)
> SCR-AB-185  (BC-AF-229 receiver, BC-AA-191 transmitter)
> SCR-AA-187  (BC-AD-219 receiver, BC-AA-191 transmitter)
> SCR-AB-187  (BC-AE-183 receiver, BC-AA-191 transmitter)
> SCR-AC-187  (BC-AG-183 receiver, BC-AA-191 transmitter)
> SCR-202     (BC-AA-179 receiver, USN type GM transmitter)
>
> Although it is not called out anywhere as serving as a frequency meter, it was provided with a 32-FOOT-long by 8-inch-tall calibration chart MC-132 that was created and serial-numbered to each individual unit.  That indicates the function was a little more sophisticated than only providing a heterodyne oscillator for CW reception.

I appreciate that great info!  It's hard to find stuff like that.  I 
certainly support your observation that it seems a bit overkill for 
simply a BFO.

> Mike...that is a stunning job on your reproduction FT-103 mount!  But I'm confused by your description which says that you did not have an oscillator unit...but then you show it on the mount.

Thanks, Mike.  It came out okay in the end.  Must have been AB5S' 
prayers as I was chopping and bashing away...   He sent me some pictures 
out of the manual and the accurate dimensions between the holes on the 
bottom of his oscillator.  The picture of the finished combo at the 
bottom of the page was courtesy of him when he received the mount - I 
always enjoy seeing something in its finished context.

73,
Mike  KC4TOS