[Boatanchors] 4-1000A in GG question

Paul Baldock paul at paulbaldock.com
Wed Jan 4 20:08:33 EST 2012


I plan to run the tube at 4KV, driving it with a DX-60B, primarily on 
10M where the DX-60B produces about 60W PEP on AM.  I know higher 
plate voltage means more gain but the 4KV is based on a transformer 
that I already have.

- Paul


At 03:08 PM 1/4/2012, Geoff wrote:
>The gain goes up a bit so 100W will give 1500W out at around 3500V 
>with a good tube. The signal improvement may not be worth the effort 
>of a well regulated screen PS.
>Plus the circuit may become unstable depending upon construction practices.
>
>Carl
>KM1H
>
>
>----- Original Message ----- From: "Paul Baldock" <paul at paulbaldock.com>
>To: <boatanchors at mailman.qth.net>
>Sent: Wednesday, January 04, 2012 2:17 PM
>Subject: [Boatanchors] 4-1000A in GG question
>
>
>>All 4-1000A GG amp designs I've seen ground the screen grid. Is there
>>any additional gain to be had if you raise the screen up to 500V?
>>
>>- Paul
>>
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