[R-390] R-390A Modified For Synthesizer Input?

[Drew Papanek]

Todd,

The R-390A with 3 BNC jacks sounds like an R-1981.   It is described at 
r-390a.net under "variations".

Drew

>
>From: "Jon & Valerie Oldenburg" <jonandvalerieoldenburg@worldnet.att.net>
>To: <ToddRoberts2001@aol.com>, <r-390@mailman.qth.net>
>Subject: Re: [R-390] R-390A Modified For Synthesizer Input?
>Date: Tue, 26 Nov 2002 22:49:11 -0600
>
>NASA used R-390A' s modified to use high stability frequency oscillators.
>Maybe another group member can expand upon this. Jon AB9AH
>----- Original Message -----
>From: <ToddRoberts2001@aol.com>
>To: <r-390@mailman.qth.net>
>Sent: Tuesday, November 26, 2002 9:26 PM
>Subject: [R-390] R-390A Modified For Synthesizer Input?
>
>
> > <PRE>I have some pictures of an R-390A receiver modified with a special
>jack panel
> > on the rear panel with 3 BNC input jacks that appear to be inputs for
> > external synthesizer control of the receiver. I was wondering if anyone 
>in
> > the list has seen an R-390A modified in this manner? I'm not sure if 
>there
> > are any extra switches on the front panel to enable/disable the special
> > inputs on the back. Looks very unusual. To see the pictures type in (or
>copy
> > and paste) these addresses :    
>members.aol.com/toddroberts2001/Item7.jpg
> >      or             members.aol.com/toddroberts2001/Item8.jpg
>Thanks
> > for any info on this. 73 Todd Roberts WD4NGG.



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