[Amps] Roller Inductor Choices

[Glen Zook]

I recently built a 160-meter only amplifier using a pair of GI-7bT tubes.  It was easy to make a socket for them starting with one of the $2.99 aluminum mini-boxes that are sold at Radio Shack.  The cathode/heater ring connections used stainless steel hose clamps and the small heater connection used plate caps of the size for 6146 tubes.

There are photos of this socket in the thread at

http://forums.qrz.com/showthread.php?282380-Socket-for-Russian-tubes

Photos of the linear are in the threat at

http://forums.qrz.com/showthread.php?284611-Almost-ready-for-smoke-test!

Glen, K9STH

Website:  http://k9sth.com


--- On Thu, 4/14/11, Roger (sub1) <sub1 at rogerhalstead.com> wrote:

I don't know if the base is the same as the GI-7B but it might be. Check the sizes and if they are, there is a guy who makes sockets for them on e-bay.  You can mount them without sockets but they do need air for axial cooling...unless you change the cooler to one that works with transverse cooling.