[Collins] R-390A

[Dr. Gerald N. Johnson]

On Sun, 2006-11-12 at 10:56 -0500, Jim Brannigan wrote:
> Are you looking to purchase this particular RX from an individual or just 
> trying to locate it?
> If it is a purchase, there is not much to the history.
> These receivers were depot serviced and the modules can be from whatever 
> they had in stock.
> My '67 EAC has modules from various manufacturers.

Good point. After a depot visit or two, its probable that only the panel
and empty chassis still relate to the production run. All the modules
were serviced in test jigs independent of the chassis.

No matter when it was built, the black beauty capacitors and maybe the
electrolytics will need to be replaced. And there are a few other
critical capacitors, like the one feeding the mechanical filter that if
it leaks causes unwelcome damage.
> 
> Try the R-390 list:
> http://mailman.qth.net/mailman/listinfo/r-390
> 
> Jim
> 
> > I'm new to the Collins list so if the question is in the wrong place 
> > please excuse me.
> >
> > I am interested in purchasing a particular R-390A but first I'm like to 
> > know a little more about its history.
> >
> > The info I have is as follows:  The R-390 Order no. 8719-p-68 serial no. 
> > 1681. Radio receiver r-390a/urr.
> >
> > The info I have does not list this Order no.
> >
> > Any help would be appreciated.
> >
> > 73  Jack
> >
> > 
> 
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer