[R-390] SS Rectifier Replacements

[Bob Camp]

Hi

Pretty much everybody has gone with common garden variety silicon diodes 
soldered to the back side of the tube sockets. If you want to go a little 
crazy you can put a resistor in-between the diodes and the input to the 
filter.

Two or three amp 1KV diodes are pretty darn cheap these days. The current in 
the radio is low enough that a two amp diode is way overrated for the 
application. Typical parts from Digikey are in the 20 to 30 cent region per 
diode.

About the wildest thing I can think of doing would be to put a couple of 1KV 
diodes in series with each other to improve the overload performance.

    Enjoy!

        Bob Camp
        KB8TQ


----- Original Message ----- 
From: "David C. Hallam" <dhallam at rapidsys.com>
To: "R-390 List" <r-390 at mailman.qth.net>
Sent: Thursday, October 14, 2004 1:07 PM
Subject: [R-390] SS Rectifier Replacements


> Has anyone had any experience with the Weber Copper Top solid state
> replacement rectifiers?
>
> I just ordered a pair to replace the 26Z5W diodes in my R-390.  They are
> supposed to be plug in and have the same electrical drop characteristics 
> as
> the vacuum tube.
>
> I was quoted a price of $10.00 each for them.  That is a cheaper price 
> than
> buying new tubes.
>
> The only tubes I have ever had fail in my R-390 are the 26Z5W and the 
> 6082.
>
> David C. Hallam
> KC2JD
>
>
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