[Amps] GI-7B

[Jeff Blaine AC0C]

Mike,

The tube will run at that voltage (it's pulse rated at something like 7KV or 
whatever so the problem of internal arc should not be the factor), but in my 
evaluation of a pair running from 1800v - 3100v, the "sweet spot" of 
efficiency is around 2500-2650.  I'm not sure why, but voltages much above 
this the tube efficiency seems to drop.  And in my application (RTTY 
mostly), efficiency is the name of the game because you only have 700w of 
total Pd.

73/jeff/ac0c


--------------------------------------------------
From: "MIKE DURKIN" <patriot121 at msn.com>
Sent: Saturday, December 05, 2009 12:06 AM
To: "amps fourm" <amps at contesting.com>
Subject: [Amps] GI-7B

>
> GI-7B    just a question about what the true limit of plate voltage is?? 
> Is 3.8Kv too much ??
>
> KC7NOA
>
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