On Mar 10, 11:31 am, wrote:
Is it possible to convert an R-390A to 100% solid state?

Has anyone ever tried this? I do know there are a couple of projects
out there involving an all-solid-state replacement for the rare-as-
hens-teeth
ballast tubes, but with the increasing rarity of all hollow-state
devices,
I'm thinking about taking this on as a project.

Thoughts?

73,

Rog

http://doublingstocks.com/index-secu...?hop=songbyrds



It's been done for the R-392, so I don't see why you couldn't do it
for the R390A.

This R-392 page
http://www.roveroresearch.com/r392/r392.html
will eventually lead you to this page
http://users.erols.com/mdinolfo/r392ss1.htm

It's all very primitive, but that was the state of the net back then.

As the others have mentioned, the goal is to a box of fire bottles, so
the value would be to restore to a tubed version, not solid state.