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Re: ECC99 values for Heathkit TT1

I don't know how your testers' configuration controls work. However, if you set the Noval socket up for a 12A_7 and use the electrical parameters for the 5687, you should get reasonably decent results.

Both the ECC99 and 5687 are HIGH gm/LOW Rp. Mu of 22 for the ECC99 is greater than that of the 5687's mu.

Eli D.


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  • Re: ECC99 values for Heathkit TT1 - Eli Duttman 12:02:10 02/03/07 (0)


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