24-09-2016, 04:28 PM
(18-09-2016, 11:12 AM)Mike Watterson Wrote: Thanks, everyone.Hi Michael.
I am on some other vintage sites too.
Re: Rod Pentodes.
I got some NOS 1j42a tubes. They are 11.5mA filament like the 1j24b, but are twin control grid like the 1j37a. Unusually they are really 12V max for Anode and g2 and seem to be best about 6V to 8V HT!
Wow that is amazing!
These valves are so interesting and the projects you can do seem endless. I think I'll get some 1j37a valves and have a play.
I actually made up a little FM set with a crystal controlled FC for Radio 2 which works well enough but I wanted to make a fully portable set the missus can use, so these low voltage ones could be the answer.
