>
>Greetings,
>
>The latest IMD thread has been very educational and
>inspiring. Thank you all!
>
// There was also a tad of technoblather.
>My questions are probably old ones but being new to
>the sport..... :-)
>
>Anyway I'm about to embark on my first linear project.
> Having never built an RF I decided I'd like to try a
>4x813 setup. 1: because the 813 almost requires a
>hammer to take it out of service, and 2: there's just
>something really sexy about the tube to me. ( poor
>reason, I know ) I also have several of them and
>almost zero dollars invested in them. I've been
>looking through some of Mr Orr's earlier books and
>there are several examples of class B linears for SSB
>use
// Class B G-G is hardly linear, but Class AB2 G-G is.
> but I'm wondering how these would fare by todays
>standards?
// From what I've measured on the air, G-G 813s are at least as clean
as the best transceivers.
>How 'bad' would they be? Even in a
>push-pull circuit? With NFB ???
>
// Push-pull is a 5-gallon bucket of worms.
>I intend to build a grid-driven setup with bias and
>screen supplies
// If you go with grid driven, better wear disguises to ham conventions
and swap meets. Name/Call badges are not a good idea either.
Grid-driven 813s are reliable splatter generators.
>... ...
cheers, Randall
- R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
end
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