Excellent point. That might account for my "odd observation". I have
usually seen the effect when noise levels are high -- mostly due to storm
activity -- and the noise is probably directional in these cases.

Bill
W2WO


"Crazy George" wrote in message
...
Not odd at all. The noise source is in a side lobe in one case and in a
null in the other. Antenna pattern changes all
over the place as you move away from the optimum frequency of a yagi.
Happens all the time. I once found a condition
where my HF tribander pulled in a 2 meter signal better than a 10 element
2 meter yagi mounted several feet higher.

--
Crazy George
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