Paul,
Sounds like you need another antenna or two.
Put one at 50' and the other at 75' and another at 100' and switch
between them as the band changes.
The 25' stacking distance is what M2 recommends for their 6M7JHV antenna.
On 7/31/2016 10:02 AM, N1BUG wrote:
Purely anecdotal, but... I have been using the same 7 element, 33 foot
boom 6 meter yagi for over 12 years. During that time I have had it at
heights of 30, 70, and 105 feet.
30 feet worked very well for single hop Es and quite well on double
hop. I believe on average I got stronger signals from stations out to
2000 miles or so at that height. On DX beyond two hop range, I did not
do well compared to the stations around me who have high antennas. I
worked a lot of DX, but I did not get as many openings as the high
antenna boys around me, nor was I able to work as far in each opening.
At 70 feet, long haul DX was very much better. I would get more and
longer openings to Europe, Africa, and the middle east. I could
compete better with the "big guns" around who get the most DX. Signals
within one hop range may have been down somewhat compared to the lower
height.
At 105 feet I was often able to open and close the band on long haul
off-continent Es. This did not happen at either of the lower heights.
There consistently seemed to be a marked advantage at this height for
DX. This height was also clearly best for tropo, such as during VHF
contests when there was no other propagation. One hop Es signals were
on average quite a bit weaker but still very workable since we don't
need 40 dB over S9 to work a station.
A year ago I relocated the antenna from 105 feet back to 30 feet. How
very disappointing! Now I sit listening to the high antenna boys all
around me working DX that doesn't exist for me, but I am still doing
very well with single and double hop stuff. It had been a number of
years since I had operated with the antenna at this height. Oh yes...
now I remember.
For me the moral of the story is I need another tower. I am fortunate
to have what I do, but cannot have all my antennas up high at the same
time.
73,
Paul N1BUG FN55mf
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R. Kevin Stover
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ARRL
FISTS #11993
SKCC #215
NAQCC #3441
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