[R-390] R-390A and the Selenium Rectifier

Fri, 7 Nov 2003 22:38:01 -0800

For safety reasons it should always be replaced.  If it goes
the fumes are very toxic..

Scott

----- Original Message -----
From: "John KA1XC" <[email protected]>
To: "R-390 reflector" <[email protected]>
Sent: Thursday, November 06, 2003 7:41 PM
Subject: [R-390] R-390A and the Selenium Rectifier

> I'd like to get some wisdom regarding the selenium rectifier used to make
> the DC for the relays.
>
> I've got an Imperial (really mostly Teledyne) radio of about 1963 vintage,
> and the selenium rectifier seems to be working fine. However, I'm doing a
> top to bottom refurb (recap etc) on this radio for a friend and I'm
> wondering if this might be a likely failure down the road and would be
worth
> replacing with a silicon bridge.
>
> If this was an R-390 it would be an easy decision as the copper oxide
> rectifier stack is always toast!
>
> thanks,
> John
>
>
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