[Milsurplus] Mobile VHF DF Set

[WA5CAB at cs.com]

Clete,

Could be the K-53 mounted SCR-566 (KE-3).  BC-639 and part of SCR-542.  
Antenna Equipment RC-83.  Radios are dynamotor operated.

Could be the K-53 mounted SCR-575.  Similar to SCR-566 except 2 X BC-639 
(RC-79) and SCR-624.  Antenna Equipment RC-153.  AC operated (RA-42's & RA-62) 
with dynamotor backup.

Brief descriptions and photos are in VHF Fighter Control Equipment Handbook 
(Companion volumn to Airborne Radio Equipment Handbook) with some photos.  
Reprint available (AAFHBK2 - $22.50).  I don't have anything further on 
SCR-566 but do have the Preliminary Instruction Book on SCR-575-A,-B (reprint 
$8.50).  It has some information on the antenna.  And dipole lengths are in a 
chart in AAFHBK2.

That's the crop as far as the DF stuff goes.  I have more on the COMM and 
CONTROL sets.

In a message dated 10/28/2012 08:08:08 AM Central Daylight Time, 
whitaker at pa.net writes: 
> de WB2CPN
> Can anyone aim me at some info I need:
> The van-mounted VHF DF set that had
> a BC-639 receiver inside, and a four-element
> vertical antenna on the top of the van.  The
> antenna elements were arranged in a rectangle.
> The operator had a wheel that was used to
> rotate the antenna for a null.
> The were two ambiguous nulls, 180 degrees
> apart.
> The operator had a switch mounted on the
> antenna shaft.  This "sensing switch" removed
> the false null.
> I am looking for info on the antenna system, and
> the sensing switch.
> Maybe SCR-375 (?).
> Robert, are you listening?
> 73  Clete
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480