[AMPS] What Tube for Home brew

km1h@juno.com km1h@juno.com
Thu, 8 Oct 1998 10:56:51 -0400



On Wed, 7 Oct 1998 14:31:28 -0700 "Radiodan W7RF" <RFpower@radiodan.com>
writes:
>
>In reference to the question on the 3CX1200Z7 tube:
>I asked Ted Henry about the 3CX1200Z7 and he called Eimac and I quote
>"Eimac swears to us that the 3CX1200Z7 is not being discontinued. "
>
>The 3CX1200A7 as used in the HENRY 3K Classic & Premier and 5K 
>Classic,  as
>well as the 3CX1200D7 as used in the HENRY 3KD Premier (desktop, this 
>tube
>is slightly shorter) are good choices for rugged dependable power.


The 1200A7 can be a problem for the homebrewer. It is known for
instability and can be a real chore to tame. 
The D7 is a better choice for a new design.

For 1500W it is still hard to beat the economy of a pair of 3-500Z's.

73  Carl   KM1H

SNIPPED

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