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

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: <[email protected]>
To: <[email protected]>
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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