kl7ra@ptialaska.net wrote:
>> Folks with a better understanding of the reasons for the frequency
>> excursion might offer an explanation. I just vary the vertical wire
>> length to fix and live with the required adjustment.
>>
>> 73, Gary NL7Y
>
> I may not have a better understanding but I lived about 20 miles
> from Gary's qth with a full size quarter wave vertical for 160
> that did the same thing. Adding more radials stopped it and the
> antenna was stable summer and winter. I believe it has nothing
> to do with the trees but ground soil conductivity or lack of
> same.
>
> 73 Rich KL7RA
>
I have a 97 ft top loaded vertical partially supported by a tree,
60ft in the tree and 40ft above. I have 250 radials on the ground
each about 160 ft long. I see absolutely no change in anything
from summer to winter, rain or shine or snow or whatever. IMO
the antenna works very good.
73 Jim SM2EKM
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160 meters is a serious band, it should be treated with respect. - TF4M
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