Bruce,
Some short recommendation:
Many Tribander antennas available but do not buy those Tribanders with LC traps.
Full-size element tribanders are much better in terms of a harmonics
interference compare to those shorter element tribanders with LC traps
installed on each element.
I am not familiar with each SteppIR antenna line but those which
should be tuned to change the band are not going to work for
simultaneous SO2R operations.
If you would go with four band antenna with a single coax fed-line you
can use a solution with a filter system shown on this webpage:
https://va6am.com/2018/11/05/4-band-hf-antenna-filter-system/
There is a quadplexer available from DXE for 4-band antenna but in my
opinion it's too much to have so many harmonics bands (20-40, 40-15,
20-10) in one enclosure, especially if you would go with 1500W of
output power.
Some of those 4-band antennas can have a separate fed-line for 40M
band and solution for 10-15-20 meter bands is to install the Triplexer
on the second fed-line.
Pavel
VA6AM
------------------------------------------------
De: TowerTalk <towertalk-bounces@contesting.com> en nombre de Bruce Meier
<bemeier@bellsouth.net>
Enviado: miércoles, 24 de julio de 2019 14:21
Para: towertalk@contesting.com <towertalk@contesting.com>
Asunto: [TowerTalk] SteppIR and SO2R
I am looking at changing my tower and antenna configurations and making it
more "from the ground" serviceable. To that point, I just completed the
installation of a US Towers HDX589 and it is in need of an antenna. I would
like to have only 1 antenna on the tower and will be using a hinge bracket
to be able to tilt the tower and keep the antenna parallel to the ground for
maintenance.
Questions:
1. The Force 12 DB-18E is the current antenna selection. Based on
what I have been able to determine this solution will not be easy (or
perhaps even possible) to integrate into an SO2R configuration due to the
need to have the IR controller connected to either the computer or radio for
frequency information. It appears that the antenna must be dedicated to one
rig only and can't be switched from Rig LEFT to Rig RIGHT or vise versa.
Does anyone have a SteppIR antenna/controller integrated into SO2R and if so
- how did you do it?
a. I am using (2) K3 XCVRs, (2) ACOM 2000As, N1MM+, YCCC SO2R box,
Array Solutions SIXPAK.
2. I have not yet purchased the antenna, so I am open to alternate
antenna suggestions. I would like the antenna to cover 40 - 10 meters. (6
meters is a bonus but not required)
Thanks for your assistance.
73,
Bruce N1LN
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