[Milsurplus] radar help

[Mike Hanz]

The aircraft version of the AN/SPA-1 is the AN/APA-6.  The only 
difference between the two appears to be a steel cover and a shipboard 
shock mount.  Since it works off of the video (wideband audio) output of 
any surveillance receiver, it saw wide usage in signals analysis early 
in the war.  Superseded by the AN/APA-11, which eliminated the flaky 
meter in favor of direct comparison on the scope of two signals with a 
Lissajous approach.  The tech manual has both designations on the cover. 
See http://aafradio.org/countermeasures/surveillance_bay.htm for a 
description.  It is not complete without the O-10/APA-6X, so there are 
actually two boxes to look for... :-)

73,
Mike

On 8/14/2010 10:06 PM, J. Forster wrote:
> No. I corrected it...  SPA-1. The aircraft version is APA-1 Used with a
> scanning receiver w/ PI heads and a bi-conical antenna. At least 30 to
> 1000 MHz. It has a meter for PRF. ARR-???
>
> -John
>
> ============
> do you mean apr-1?   it is  like an apr-4 lotsa  plugins!
>
> In a message dated 8/14/2010 6:55:26 P.M. US Mountain Standard Time,
> jfor at quik.com writes:
>
> See:
>
> http://www.maritime.org/radiocat.htm
>
> and read  down to APA-1  "RADAR Countermeasures Receiver"
>
> The sub Lionfish  in Battleship cove has one. I lust after  it.
>
> -John
>
> ==============
>
>
>
>
> Thanks,
>
> Ed Sharpe, Archivist for SMECC
>
> See the Museum's Web Site at _www.smecc.org_ (http://www.smecc.org/)
>
>    
>
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