>
>In a message dated 06/21/2000 09:36:32 AM Pacific Daylight Time, 2@vc.net
>writes:
>
><< In other
> words, put a jumper between the cathode and the heater, and use a heater
> choke - the same as one would do for >>30MHz operation >>
>MAKES U WONDER JUST HOW MUCH MORE IT WOULD COST THE MFG. TO DO IT RIGHT!
>
Good point, Hank. My guess is that most of the manufacturers have
engineers with limited educations. . For instance, all of the
Ameritron/MFJ amps use a HV ''bypass'' cap that has 88-ohms of Xc at
1.8MHz (1000pF). What kind of a bypass is 88-ohms of Xc? During a
debate with Ameritron/MFJ's head engineer, it became apparent that he did
not understand algebraic or scientific notation.
cheers
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|