The Triode Board

The Tetrode Boards

Control and Protection
for your
RF Power Amplifiers

Tried and tested - now over 1800 in use world-wide!

Buy boards here, direct from GM3SEK

Sorry, we are no longer supplying kits.
After sorting and packaging more than 100,000 individual parts, enough is enough!

We are still supplying boards, of course.

The User Manuals contain a complete parts list, and all parts are available from major international suppliers.