[amsat-bb] Antenna Location

Sat Jun 6 14:55:11 UTC 2020

Yeah, I was wondering about that.  I guess I could do a simple RF
attenuation test.

Rich

On Fri, Jun 5, 2020 at 9:27 PM Floyd Rodgers via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> Many newer houses have foil backed plywood decking to block heat transfer.
> That also blocks rf.
>
> Floyd KC5QBC
>
> > On Jun 5, 2020, at 7:02 PM, Burns Fisher via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
> >
> > Rich,  the attic has always seemed like an attractive location to me, but
> > I'd suggest before you go that route, do some reception checking.  For
> > example,  see how well you receive one of the Foxes on an HT on the
> ground
> > outside, and then go to the attic and see how similar it is.
> >
> > For reasons unknown, the last time I tried this I was totally unable to
> get
> > ANYTHING in the attic, although I know some people have done well there..
> > I wonder if it relates to the spacing of the nails compared to the
> > wavelength, or something about the particular mixture of material used in
> > the shingles?
> >
> > On Fri, Jun 5, 2020 at 4:44 PM Bob Hammond via AMSAT-BB <
> amsat-bb at amsat.org>
> > wrote:
> >
> >> I use a fiberglass mast by MGS for my M2 LEO antennas and G5500 rotator.
> >> Works fine.
> >> You may not have enough room for the guy lines?  I have expired HOA
> >> covenants, the best kind!
> >> Mine is up about 30-35 feet.  PM me for details if you're interested.
> >>
> >> Bob W7OTJ
> >>
> >> On Fri, Jun 5, 2020 at 12:08 PM Rich Gopstein via AMSAT-BB <
> >> amsat-bb at amsat.org> wrote:
> >>
> >>> Thanks.  I've gotten a number of responses ranging from:
> >>> Put up a tower
> >>> Put it in the attic
> >>> Put it on a tripod on the roof
> >>> And - yours - put it somewhere reasonable and don't freak out about the
> >>> attenuation.
> >>>
> >>> The garage and the house both have 8/12 pitch roofs, so that's my
> concern
> >>> with mounting on the roof.  I've done it before but I'm happy about it.
> >>> The garage is lower, so less of a fall, but still steep.
> >>>
> >>> I might be able to get a small AZ/EL setup inside the attic above the
> >>> garage.  The issue there is my shack is on the exact opposite side of
> the
> >>> house.  So, I'd most likely need to move the shack to the garage attic.
> >>> There's power up there, but no insulation.  Maybe I could put the
> IC-9700
> >>> there and remotely control it?
> >>>
> >>> I've thought about a tower... But there are so many tower options,
> it's a
> >>> little daunting.  If I put the tower just outside where the shack is,
> I'd
> >>> need about 38' to clear the highest peak of the house roof.  I could go
> >>> lower and just live with a little extra attenuation from the house
> roof.
> >>> And I assume any tower would come with the need to deal with the local
> >>> zoning/permit guys.  If I go that route, I'd want the tower to be high
> >>> enough to use as the center of a dipole also.
> >>>
> >>> Too many options...
> >>>
> >>> Rich
> >>> KD2CQ
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>> On Fri, Jun 5, 2020 at 2:18 PM satop <satop at protonmail.com> wrote:
> >>>>
> >>>> Rich, my last location was worse than yours I believe.  I lived in an
> >>>> large city two story home with 9' ceilings and a large peak roof,
> think
> >>>> 1903 style.  There was a three story home on the east side and a three
> >>>> story church on the west.  Three very large oak trees in the front and
> >>> very
> >>>> poor aim points to the north.  I mounted my tripod on a one story wood
> >>> shed
> >>>> on the north end of the home.  I had about a 60' run of hardline to
> the
> >>>> shack and used high gain yagi antennas for vhf/uhf.  This setup worked
> >>>> fantasy and always was amazing to me.  I even pre purchased a
> Super-Amp
> >>>> SP-7000 for UHF but never found that I needed it.  Use some antennas
> >> with
> >>>> some gain and I'll bet you'll be just fine mounting on the garage or
> >>> lower
> >>>> build.
> >>>>
> >>>> Gary/N8AYY
> >>>>
> >>>>
> >>>> Sent with ProtonMail <https://protonmail.com> Secure Email.
> >>>>
> >>>>
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