[R-390] 390A Audio Deck ?

[Barry Hauser]

As I recall from old posts -- it was for an optional squelch.

If not, maybe it was like one of the three B-29's the Russians kept and 
copied during/after WWII.  It had a patch in the fuselage.  All the TU-4's 
they made had the the same patch because they were told to make an exact 
duplicate.

Not likely, but I don't know that anyone has ever seen the audio deck 
without the patch and the optional "kit" installed.

OK, so I'm a rumor mongerer.  Practicing to become a TV news pundit able to 
speculate on cue.

Barry


----- Original Message ----- 
From: "Cecil Acuff" <chacuff at cableone.net>
To: "R390list" <r-390 at mailman.qth.net>
Sent: Monday, April 25, 2005 9:33 AM
Subject: [R-390] 390A Audio Deck ?


> Hey Folks,
>
>        Things went from lively to dead all of a sudden.  Thought it might 
> be a good time to ask a question.  While contemplating the construction of 
> the R-390A audio deck questions in my mind have come up about the planned 
> use the original designers had for the mirrored relay and tube socket 
> holes that are blocked off.  The various builders of the audio deck in all 
> cases seemed to have punched all the holes and labeled the chassis then 
> covered it all up from the top side with a block off plate.  I haven't 
> gone as far as removing the plate to see if the tube type is even 
> designated...i'm assuming it would be another OA2....but maybe not.
>
> Just thought I'd check with the group for some history about this.  I 
> can't say I remember it ever being discussed..
>
> Thanks...
>
> Cecil...
>
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