On May 11, 2006, at 5:09 PM, wc6w@juno.com wrote:
> Hi Chuck,
> I looked at your photos (nice work!) and it appears that you are
> using a piece of Airdux with perhaps #12 size conductor. That is a
> mite small for 20 meters. I'd suggest upsizing the 20 meter
> section of the coil to at least 1/8" (#8) or even 5/16" diameter.
>
> The load padding capacitor as noted by several others is the
> wrong type for this application.
>
> A few options:
>
> 1. Change the load vacuum cap to 1400pF and eschew the padder.
>
> 2. Use a better quality padder.
> A Jennings JSLF-450
> or
> Several Centralab (or equiv.) 850 series ceramic NPO's in
> parallel
N750s are also suitable for tuned circuit applications.
> ...
>
R L MEASURES, AG6K. 805-386-3734
r@somis.org
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