A DC grounded antenna offers a path for static build-up to bleed off.
A delta loop and other types work, and are therefore a quieter and
better receive antenna.
If you don't have room enough to convert a wire dipole to a delta loop
an electrical 1/4 wave length of coax with one end shorted and the other
strapped across the antenna feed point will put an amount of inductive
reactance into the antenna which equals the ZO of the coax.
The antenna now is DC grounded but appears to be longer. Trim the ends
so it is back where you want it and you will have a quieter and shorter
When going the Delta Loop route I have found that using a 1/4 wave
matching stub works better than the 1/4 wave matching transformer
(I find that a lot of hams mistakenly call the transformer a stub)
There is a simple antenna program that I wrote available for download
at my site. It has a pic of both and a calculator to compute length and
placement of stub. There are the basic antennas and a few not not so
basic in the program. I have no idea who gets it so there will be no
follow up via e-mail. It's absolutely free.
> Boy, that schematic looks awful on this group! :-) It looked better before I
> sent it, I swear!
> Oh well, it's a very simple circuit and should be easy even from the text
> Mike in MO.
Curtis .. N5HDQ .. http://wf.quik.com/n5hdq
I can't think of anything witty to say here.
Oh well, no one is perfect.