Hi
I want to thank everyone on this alias to suggest running HFTA. I spent and
couple of hours tonight and now realized that this was a very valuable
exercise. Since I promised to report back some findings here it is:
I got a couple of directions with slopes. My slope to Europe especially is a
very even 300 feet drop off over the first 2500 feet. This seems to be working
extremely well. To Europe as an example, I can get up to a 11 dbi gain at 4
degrees elevation angle on 40 with 2 el. Yagi at 55 feet. On flat ground that
same antenna at that height would perform 15 dbi lower (-4).
If I switch to a 3 el yagi at 55 feet on 20 m, I seem to even max out at 16 dbi
at 3 degrees elevation. Almost too good to be true.
Summary:
Unless I am doing something wrong with HFTA, in my case there is no need at all
to go above 55 feet (size of a small tubular crank up mast). Remember my goals
from below, no huge expenditure and good DX setup 40 and up.
Thanks
Andreas
KU7T
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Andreas Hofmann
Sent: Thursday, December 01, 2011 10:47 AM
To: Joe Subich, W4TV; Drax Felton; [TowerTalk]
Subject: Re: [TowerTalk] Cost effectivel Tower height
I have received an overwhelming response to my questions. I should have
mentioned a few more points/requirements:
- single multiband beam 40 - 10. No stacks. I am running verticals and wires
hanging in trees and can hear ok, but are not being heard well on 40 for
example. I want at least a few S units improvement and F/B would be great as
well.
- I like DX and DX contesting, but casually. Focus on Europe.
- self supporting, no guy wires
- low profile to appease to wife and neighbors
- cheap. This is a hobby for me and I am not retired (:-)
- account for the sloping terrain, so if it can be lower because of it, yes,
yes, hence cheaper.
I understand that any multi-band beam is a compromise.
I understand that any beam might not work to its maximum into all DX directions
(different angles needed).
At this point, I want to thank all of you for your input. I will run the
suggested software and report back with my findings.
Thanks
Andreas
KU7T
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