On Wed, 14 Jan 2009 12:57:18 -0700, Steve Flood wrote:
>Aside from running a battery of A/B tests (choked/unchoked) while listening
>for noise, can one run around with a grid-dipper checking various control
>wires, fencewires, tv cables, raingutters, and come up with any useful
>information?
Yes, looking for resonances with a dipper or equivalent is certainly a good
idea. And it's quite helpful to do your listening for noise with a portable
radio that you can tune to a frequency where you're bothered by the noise.
What else? Look for any grounded conductors that approach a quarter wave at
a frequency of a nearby antenna, or ungrounded conductors that approach a
half wave at the operating frequency of the antenna, especially those that
are nearly parallel to the antenna. These are most likely to act as
parasitic elements for the antenna.
73,
Jim K9YC
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