[Milsurplus] Ray's mystery box

[Scott Johnson]

Correct, Ed
It is a carpet jammer, late WWII , 15 watts, designed to jam the Wurzburg
radars.

Scott
----- Original Message ----- 
From: "ed sharpe" <esharpe at uswest.net>
To: "Eric Jones" <ejones at hiwaay.net>; <milsurplus at mailman.qth.net>
Sent: Friday, August 27, 2004 6:35 PM
Subject: Re: [Milsurplus] Ray's mystery box


> APT 5....  isn't that  a countermeasures transmitter?   I seem to remember
> it as such...
>
> ed sharpe
> ----- Original Message ----- 
> From: "Eric Jones" <ejones at hiwaay.net>
> To: <milsurplus at mailman.qth.net>
> Sent: Friday, August 27, 2004 5:15 PM
> Subject: [Milsurplus] Ray's mystery box
>
>
> > de N4TGC Eric
> >
> > Ray's mystery box does sound like an early v. of the ASB (Aircraft,
> Special,
> > Bombing) gear.  I have schematics for the ASB-5 and -7, which describe
> much like
> > his, except the front end is composed of three 446A 'lighthouse' tubes
for
> RF
> > amp, 55mc converter, and HF osc., followed by a string of six 6AC7's,
the
> third
> > of which is a second converter on 16mc (fed by a 6AC7 as 71mc osc); then
a
> 6H6
> > detector, 6AC7 video amp., and 6AG7 video PA.  The unit was the receiver
> for a
> > ~400mc radar ranging pair, of which the tx would be an APT-5 or such,
> using
> > 3C22, more 6AC7's, 829B, 6AG7, and 6LG7 (huh?! - have to look that one
> up!)
> >
> > The front might have a power jack in the lower right, tuning gearbox
above
> that;
> > a couple of spring-loaded covers over other tuning adjustments; a quad
of
> jacks
> > for sensitivity switch, video in, rcvr out, and rcvr input.  Can't
really
> tell
> > the size from the illustration in Caringella and Clark's book.
> >
> > Probably a pretty useless piece of 'looky-here', but probably rare, too!
> e
> >
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