[R-390] R-390A Variant

[federico]

Hi to all,
          probably it is part of a system developed for Apollo missions (land 
based obviously) that employs an external frequency sinthesyzer by MANSON 
Laboratories. At the moment I don't remember the name (R-1490/URR??? probably 
wrong) and I'm in my holiday home so I can't check.

73 de Federico IZ1FID

On Tue, 5 Aug 2003 22:07:41 -0500, Byron Tatum wrote
> Hello-
>     I recently obtained a variant of the R-390A of which small 
>  relays were installed on modules and 3 osc. output / inputs were 
> available at a rear panel plate, equipped with 3 BNC conn.and 
> terminals to energize the relays. The front panel tag is missing and 
> I cannot recall the ID number of this set. I believe this one is an 
> all Collins made unit, and it is only the second of this type that I 
> have seen.About 8 years ago I dis-assembled one of these, it was an 
> all Collins module and mainframe set, however the modification was 
> done by another contractor.The front panel ID tag reflected a new 
> type number.    I would be interested in trading this set for a late 
> model { preferably EAC} if anyone is interested.It is complete with 
> covers and meters.    Thank you, Byron WA5THJ.
> 
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