[R-390] What are the odds?

[Francesco Ledda]

I had a working FRR-59B stored in my garage for about 15 years.  When
powered again, it worked like a champ!



-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net]On Behalf Of Cecil Acuff
Sent: Sunday, January 01, 2006 10:09 AM
To: r-390 at mailman.qth.net; Tom Norris
Subject: Re: [R-390] What are the odds?


Well first off the math didn't work out for me....3 working radio's stored
and one non-functional parts unit.  Twenty years later out come the 4
radio's and we are taking odds on how many of the 4 would have problems.

My guess is that the parts unit would still be a parts unit and out of the
remaining three the best odds of a working radio will come from the
R-390/URR units.  Storage will have a lot to do with the odds on the all the
radio's.  Humidity saturation on carbon comp resistors is a problem as well
as corrosion.  I think given reasonable storage...say in a closet in the
house...odds are all three previously working radios will still work fine.
Stored in the garage in the desert southwest probably the same.  Stored in
the garage in the deep south along the Gulf Coast or maybe any coastal
region for that matter my money would be on the R-390/URR's....with the "A"
being a close second as long as they were protected from the varmints but
expect them not to be as pretty with some corrosion possible and poorer
performance.

Hey my Blue Stripe radio worked when I received it from Fair Radio (received
WWV on 10 Mhz)....it was a complete but un-checked unit.

Cecil....


----- Original Message -----
From: "Tom Norris" <r390a at bellsouth.net>
To: <r-390 at mailman.qth.net>
Sent: Thursday, December 29, 2005 1:32 PM
Subject: [R-390] What are the odds?


>A while back I posted about a few radios I received from an SK estate  some
>time back, here's an update along with a story.  The part about  the odds
>are for those
>
> Lets say there were 2 R-390s and a '390A in semi regular use [wild  guess
> about two decades ago] by an older ham, then were put into  storage -
> along with a semi-gutted "parts" R-390A - when the fellow  became too ill
> to use them.
>
> If these radios were to come out of storage --
>
> What are the odds that 3 out of 4 would have a problem of some sort?
> What are the odds that 3 out of 4 would have a problem in the *same*
> deck?
> What are the odds of that problem being of the sort that would  require
> the
> radio to be pretty much completely disassembled?
>
> Question --
> Which radio is working, worked off the bat with no major module repair
> needed, and is working to this day?
>
> Murphy's laws of infinite probability apply.
>
> Tom NU4G
>
> It's a boring afternoon and I wanted to post something.
>
>
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