Many years ago I replaced a TA 33 with a Force 12 C3, I saw one db
improvement in signals testing 15 meters and 20 meters ( before then
after) with a station 30 miles away, it was even on 10 meters, in all
ways of comparison it was better, I later put the 40 meter element on it
which had its own feed line simply a great antenna is my report, which
proved out chasing dx before then after how many tries how much power.
On a tower I would also check out the aluminum crank up getting the pro
and con input from others a friend had one many years ago was happy with it.
If the antenna at low rest height is right you work on the antenna from
the roof a benefit of putting it by the house.
Regards
Art
ka9zap
On 7/12/2016 8:44 AM, j...@kk9a.com wrote:
The antenna just over your roof line should not be a problem. You will be
able to work a lot of stations with this setup. Before buying the antenna
I would suggest that you read the tribander test report.
http://www.championradio.com/HF-TRIBANDER-PERFORMANCE-TEST-METHODS-RESULTS.2
John KK9A
from: Terry Brown n7tb
Mon Jul 11 21:21:51 EDT 2016
Hello all,
I have decided to purchase a new smaller lightweight crankup tower and a
smaller tribander such as the Mosley TA-33 JR-N or NW. I have seen the US
Towers MA-40, a 20-41ft. crankup as one type. It comes with a tilt over
base add-on which would allow me to service the antenna from the ground.
This particular two section tower can crank down to 20 ft., thus not being
visible from the street east of the house. It's max height is 41 ft. which
would put the antenna only 9-10 ft. above the roofline when transmitting to
the East. I want to put a winch on the tower so I don't have to physically
crank it up by hand as I get older. With this background I have two
questions:
1. Will the yagi attached to the tower with only 9-10 ft. height above
the roofline (41 ft. tower) be an effective radiator and receive antenna on
20-15-10 meter bands to the East? Being on the West Coast, this will be the
direction of most of my mainland US contacts. To the N-W-S, the antenna
will be 41 ft. above the ground, so no problem.
I know I can have a larger tower and antenna, but I want my setup to be
neighbor friendly. I am not a contester, and will never operate over 100
watts. It is nice to be able to work a station if I can hear it. I also
want the advantage of a horizontally polarized antenna with gain. I have
been spoiled with that setup over the years.
Thanks in advance to you all.
73's,
Terry Brown, N7TB
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