Chris,
Your name sounds familiar. Did we go to to school together? What is your
call?
Jay, K2ZT
On Tue, Dec 15, 2020, 6:35 PM Chris Wilson <chris@chriswilson.tv> wrote:
>
>
> 15/12/2020 23:23
>
> Many Henry RF generators on 27 or 14 MHz use a brass (?) slug within a
> copper tube coil for inductance changing (as the turns counter advances the
> slug within the coil the inductance reduces) and a rather Heath Robinson
> variable capacitor using two brass plates, with a Teflon insulation sheet
> between them. Now I realize they were not intended to be frequency agile,
> so my question is, is there an advantage to changing the strange looking
> variable cap for a vacuum variable? Is the consensus of opinion that slug
> tuning the inductor is fine and can be left as is? Thanks.
>
> An example Henry RF deck is at http://www.chriswilson.tv/deck.jpg
>
> --
> Best Regards,
> Chris Wilson.
> mailto: chris@chriswilson.tv
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|
