On Feb 23, 2005, at 4:54 PM, TexasRF@aol.com wrote:
>
> Hi David, it will absolutely be helpful. Heck, the grid dipper test is
> helpful. We have been arguing over er, discussing, such a small
> difference in frequency that it is basically a trivial difference.
In my test, as I recall**, the amplifier was tuned up at 3.8MHz, the
amplifier was shut down, and the tank resonance was measured at c.
3.4MHz.
** alzheimer's disclaimer.
> ?
> The only gottcha is that the tube and other nuisance reactance
> (strays) will be added to your plate tuning C value. The net effect is
> when everything is finally connected, the plate tune C will end up at
> a lower setting. No matter though, this why there is a knob on it; we
> just can't always predict the exact total of the extra C contributors.
> As the frequency is lowered, this naturally becomes less of an issue
> and when raised, more of an issue.
> ?
> 73,
> Gerald K5GW
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|