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[Amps] Gi-7b

To: "AMPS" <>
Subject: [Amps] Gi-7b
From: "Mike(W5UC) & Kathy(K5MWH)" <>
Date: Mon, 26 Jun 2006 21:09:49 -0500
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Good Evening All:

I found this group while searching for information on the Gi-7b Russian tubes.  
So, here is the question.  Has anyone used the Gi-7b in an amplifier?   I am in 
the process of building a new amp for 6 meters using a pair of these tubes. 
What kind of output did you get, and at what efficiency? I have seen data 
saying anywhere between 700 & 1200 watts for a pair at 6 meters, and at 
efficiencies from 57% to 68.5%  

Did you burn the tubes in before applying HV and drive?  What was your burn in 

Any input would be greatly appreciated.

Mike, W5UC
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