Can I incorporate reinforced concrete and a steel building into a radial
field?
About 20% of my 60 buried radials from a grounded tower will encounter
concrete pads/driveway before they get to the "target" length of about
90'. One reference I found quotes moist concrete as having a
resistivi
> If we want to make an antenna electrically longer through cable velocity
> factor, it can't be done by the insulation slowing the wave inside the shield.
>
> 73 Tom
>
In my experience, external insulation (through synthetic covering or frost)
lowers the resonant frequency of wire antennas of
Shielded loops are not shielded, and neither are shielded ground leads or
even BOG's. The outside is always the naked antenna, just like a single
unshielded conductor.
One more additional comment that came up in email that is useful as general
information on "magical antenna tricks".
The
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