[Boatanchors] 6AU4 SS replacement?

[Eugene Hertz]

Hi All,

While trying to set the FSK shift on my transmitter last night, it coughed up some smoke. I pretty sure the smoke was from one of the 6AU4 rectifier tubes used in a 600V supply (for 6550 finals).

I am thinking about replacing the rectifiers with solid state. You may ask why? Simple answer is there are 3 rectifiers in the transmitter consuming a total of 37W of filament power and heat.  For those concerned, I always run the transmitter through a variac and can adjust it down to lower the B+.  Also, as far as inrush through the power transformer, I think I'm ok because the power transformer does not directly feed filter caps, it first goes through some mighty chokes. So I think the choke will moderate the current filling up those capacitors.

In any case, the real question is, does anyone have any experience with SS replacements for the 6AU4? My google research has only located one which can be found here:  http://tinyurl.com/2crs5e

This is the only one I've located. Anyone ever use this brand? Anyone know of any other product? Seems like embedded in this is a (or more than one?) 1N1262. I wonder if they do anything else like series resistance, good heatsinking or anything fancier. Otherwise, why couldn't I just wire in a 1N1262? (maybe 2 in parallel for more forward current?).

Transmitter also has a 5U4 which I will probably replace with the weber copper cap.

Any thoughts welcome.
[If responding to the list, note that I have cross-posted, so only reply to the list you belong to so that I may avoid the ire of the list gods ]
thanks! Eugene