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brief update:
Yesterday, I found my canabelized VHF/UHF rabbit ears table top antenna, this just has the UHF loop on it. I went up on the roof and set the base of the loop antenna on the RF 6 only antenna, removed the 3-way combiner from the input of the pre-amp, and connected the loop antenna to the pre-amp, tuned up RF 18 and swung the beams back and forth. RF 18 had been expectedly non-receivable all morning with the clear blue skies, but as I turned the rotor...BOOM...there was RF 18 at a 22% SS...the loop catching a signal the main array could not.
This further convinces me I am getting interference from the side of the log periodics, or a reflection off of another antenna from the side.
I will be taking the advice of dbsanfte and removing the bottom 2 antennas to see if there is an issue with reflections.
Last edited by kb2fzq; 15-Apr-2010 at 9:13 AM.
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