On Tue,10/6/2015 4:51 PM, K1JOS wrote:
I am moving to a home situated on a hilltop. Nearest same height hilltop or
higher is about 1 miles away. The home is surrounded by dense (typical New
England Forest) 80' high hardwood and fir trees and my planned small tower
(budget and local codes) gets me only to a 50-60' antenna height. The trees
will be within 50- 75' from my nearest Yagi ends. How badly can I expect
my signal to be affected by the higher surrounding tree tops?
Not at all below 2M. Hilltops are wonderful for HF -- I've operated
from several. My antenna farm is in the middle of a very dense redwood
forest. The trees hold my 80/40 dipoles at 140 ft, they tower at least
50 ft above my 3-el SteppIR, which is at 120 ft. Except for 160M, all my
antennas are horizontal. 160M antennas are verticals.
Another point of interest. Hilltops often have poor soil quality. That
makes them bad for verticals, because verticals need both low loss under
them and low loss at the first reflection. Verticals are also more
affected by trees.
I strongly agree with K4XS that you should use HFTA EXTENSIVELY. I put
hundreds of hours into it.
73, Jim K9YC
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