In Reply to: 211 alternatives posted by Genp on February 25, 2016 at 06:45:57:
An unusual alternative would be the 4-125A/4D21 strapped as a triode . It's a tetrode with mu of 6.5 , gm 2.4mA/V . Intended for forced air cooling so don't run near the 125W dissipation rating .
Al
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Follow Ups
- RE: 211 alternatives - Al Noakes 02:45:53 02/26/16 (0)