[amsat-bb] HF and Satellite antennas on one mast?

[Michael Walker]

Hi Rich

I would give that a go.

Put the 3 EL Steppir at the top of the tower just above the thrust bearing
and then add the LEO antenna and the elevation rotator at a height you can
work at above the Steppir.

I think you would be pleased with the performance.   I had done a similar
installation for years with the 2M above the Steppir without issue taking
into account all the normal tower cable running, etc.

Mike va3mw


On Thu, Jun 11, 2020 at 4:39 PM Rich Gopstein via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> Thanks. A LEO-pack might be a better choice for stacking then. Since the
> coax wouldn't hang down as far. Also less wind area...
>
>
>
> On Thu, Jun 11, 2020, 1:14 PM W3AB/GEO <w3ab at yahoo.com> wrote:
>
> > That would work. Your AZ rotor will determine how big a HF beam you can
> > install. Don't forget to add in the Sat array for wind load. The spacing
> > will probably be determined by your coax feed to the Sat antennas.
> >
> > ___
> > Sent from my two way wrist watch
> > 73 de W3AB/GEO
> > On Jun 11, 2020, at 08:24, Rich Gopstein via AMSAT-BB <
> amsat-bb at amsat.org>
> > wrote:
> >>
> >> I'm considering putting up a tower to get my satellite antennas off the
> >> ground.  As long as I'm doing that, I'm considering putting a small HF
> beam
> >> up there too (maybe the 2 or 3 element SteppIR?).
> >>
> >> Has anyone done that?  Do you put the HF antenna below the AZ/EL setup?
> >> How much room would I leave between them?  BTW - I have the larger M2
> >> satellite antennas, not the LEO-pack, so the antennas are mounted near
> the
> >> middle of the booms, not at the ends.
> >>
> >> I imagine I'd split the G-5500 into separate AZ and EL rotators, placing
> >> the AZ rotator in the tower.
> >>
> >> Thoughts?
> >>
> >> Thanks.
> >>
> >> Rich, KD2CQ
> >> ------------------------------
> >>
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> >>
> _______________________________________________
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