[Milsurplus] Re: ARQ-1 jamming transmitter/ receiver

[Hue Miller]

Jack- excuse me for posting reply to the mil  list also, but i thought  it intereresting 
enuff:

----- Original Message ----- 
From: "Jack Antonio" <scr287 at sbcglobal.net>
Sent: Sunday, July 03, 2005 3:00 PM
Subject: ARQ-1


> Mike and Hue
> 
> Found time to play with the ARQ-1.
> 
> Transmitter output 30 watts at 20.5 mc/s. Nice white
> noise in the R-390. Didn't tune around to get a handle
> on how broad though.
> 
> Pictures (sorry for the blurry spectrum analyzer pics, I
> have to work on that) show the unit in transmit mode,
> close up spectrum of signal, and wide view, showing
> harmonics, both before and after sticking the F-15/U filter
> in line.
> 
> Bummer is, receiver barely hears 100,000 uv from the sig gen.
> What I thought was a bad electrolytic was in reality a bad
> micamold(shoulda guessed) so replaced that. May have to replace
> the other half dozen or so on general principles.
> 
> Have a jammingly good 4th!

Jack- how'd you power it up? 400 Hz or splice in voltages?
I'm surprised at the output, i would have guessed a little less.
Now you can be king of whatever local CB channel you choose.
I would expect the receiver sensitivity to be more like 100 uV, it
being a straight TRF.
But it looks pretty darn good in the photo.
And the output signal in the spectrum analyzer: nice and spikey!
thanks! -Hue Miller