[ARC5] [MMRCG] Dud German Tubes?

[Jacques Fortin]

Hi David,

 

May I ask what are the original tubes types you have to build substitutes
for ?

Did you have some of those "wear-off" tubes that you can use the duds ?

 

73, Jacques, VE2JFE in Montreal

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20241110/937d555c/attachment.html>