[TenTec] Omni VI and non TT Amp

[Rick Denney]

Ken Brown writes...

> Last time I had an amplifier using anything like 811A tubes, they
> were actually 572B, and it took two of them to get 650 to 800 watts
> out. It was a Heath SB-200. Is that really an 811A?

I was talking about the Ameritron AL-811a amplifier, which uses three
811a transmitting tubes, not the tube itself. The 572b tubes are
indeed capable of greater output because of their higher plate
dissipation rating, their greater grid current rating, and their
higher plate voltage. Yes, the 572b is "like" an 811a tube, and some
use them in amps designed for 811a tubes because of their perceived
greater durability, but they aren't really the same.

Rick, KR9D

---
Richard W. Denney, Jr. PE|Iteris, Inc.
Associate Vice President |107 Carpenter Dr. Ste 230 |    703.925.3819
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