Just for accuracy I timed my 3 element 20-6 meter steppir changing bands from
20-15 (9 seconds) and 20-10 (14 seconds). 10-15 (7 seconds) and 10-20 (15
seconds). Now I am not familiar operating SO2R but as I understand it two
operating positions using the same antenna so would be a train wreck in the
making. Can't see how it could be done without separate antennas, XCVR's setup
to not transmit at the same time, and some very coordinated operators. No
wonder I never tried it although I have pushed the rules when going for a
multiplier on a second band. I know my friend K7ZS does this but besides his 4
el steppir he also has a TH6DXX half way up his tower so I can see that would
work. I know his scores probably double my SOAB at least on some contest like
CQWWPHN. And that is when I am having pretty decent luck. But each contest has
it's own flavor and sometimes getting some sleep can be challenging. Anyway the
point is while it would be possible to operate with separate antennas I can't
see how a steppir could work changing bands for two operating positions. They
are great antennas and do well on multiple bands but not for SO2R (IMHO). Now
multiple steppir antennas would work.
Terry
KI7M
> On July 26, 2019 at 8:29 AM Pavel Perchine <va6am.engineering.sale@gmail.com>
> wrote:
>
>
> 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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