Yes I have seem frequent times when my 50 ft high 10m yagi
outperforms my 110 ft yagi.
50 vs. 110 feet on 10 meters is really a special case. At 50'
you're already 1.5 waves above ground - a level that has a nice
broad (ca. 4 to 17 degrees at -6dB) vertical lobe. At 110 feet
you're 3+ waves above ground three very deep nulls below 35
degrees. That situation does not appear on any other HF band
with readily achievable tower heights (70/160' on 15 and 110/225'
feet on 20).
There are plenty of times a 35 foot high yagi will beat higher
antennas domestically and to Central America/Caribbean from
here in Florida but on balance high is still better for the real
DX paths.
73,
... Joe, W4TV
On 10/28/2013 5:56 PM, Doug Renwick wrote:
Yes I have seem frequent times when my 50 ft high 10m yagi outperforms my
110 ft yagi. Usually the higher yagi is the best, but there are times when
the signal is barley audible on the higher yagi, the signal is booming on
the lower antenna. Not always but there are times.
Doug
"Think of all the ways you can hurt yourself laughing."
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Richard (Rick) Karlquist
I haven't observed any cases where the 40 ft high Yagi was better, but I
could believe that could happen occasionally. These tests were done on 20
through 10
meters.
Rick N6RK
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