[Amps] Gi-7b

[Mike(W5UC) & Kathy(K5MWH)]

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 process?

Any input would be greatly appreciated.

73,
Mike, W5UC