[amsat-bb] AO-85

Fri Aug 12 23:49:52 UTC 2016

Glad it helped! Thanks very much for subscribing!

73, John Brier KG4AKV
On Aug 12, 2016 7:44 PM, "R. S." <rzar66 at gmail.com> wrote:

> OK, that explains probably why AO-85 is so much more quieter than SO-50. On
> one pass I only heard one other person calling out and on another pass two
> people having a casual rag chew. On the other hand, trying to work SO-50, I
> can barely get my call-sign in.
>
> John KG4AKV. I stumbled upon your great Youtube videos last week. I
> subscribed.
>
> 73,
> Ryan
> W6ZAR
>
> On Fri, Aug 12, 2016 at 4:06 PM, Jerry Buxton <n0jy at amsat.org> wrote:
>
> > John said it pretty well in his recollection of what I published in the
> > Journal regarding the antenna story.  The 200 watts EIRP was my
> > recommendation simply based on my use at or near the horizon and that
> > was stated as "for full quieting".
> >
> > As he said, there are folks working it with 5W and an Arrow antenna
> > myself included, and the orientation of the satellite to your station as
> > well as number of stations on the air have a lot to do with it.
> >
> > I believe that 15W will do you nicely with the Arrow, but I'll let
> > others who have that experience speak to that.
> >
> > Jerry Buxton, NØJY
> >
> > On 8/12/2016 17:33, John Brier wrote:
> > > It is recommended to use 200 watts EIRP to get into the sat.
> > >
> > > Someone else more knowledgeable and experienced can correct and clarify
> > > this but this is how I remember the 200 watt recommendation being
> > explained:
> > >
> > > Before launch a connection or trace leading to the antenna broke
> (IIRC).
> > > The person who had the experience to resolder it wasn't available and
> > with
> > > the little time they had left they chose to use an electrically
> > conductive
> > > epoxy to fix it. The epoxy didn't provide the right impedence and now
> the
> > > antenna is essentially detuned. It makes the bird appear deaf. To
> > overcome
> > > this you have to use more power.
> > >
> > > With that said people can get into it using 5 watts and an Arrow. I
> > haven't
> > > been able to on the few tries I gave it.
> > >
> > > One trick that supposedly helps with cross polarized antennas like the
> > > Arrow is to twist the antenna 90 degrees when you transmit since the
> > bird's
> > > antennas are linear.
> > >
> > > 73, John Brier KG4AKV
> > >
> > > On Aug 12, 2016 6:12 PM, "R. S." <rzar66 at gmail.com> wrote:
> > >
> > >> I will keep trying. I really need to get another Radio to work it full
> > >> duplex so I guess I can get something with a little more power for
> > >> transmit. Really strange since I just work SO-50 this morning at a 17
> > >> degree pass but cannot work AO-85 at a 89 degree pass. BTW my I just
> > got my
> > >> vanity call this morning. I am now W6ZAR.
> > >>
> > >> Ryan
> > >> W6ZAR
> > >>
> > >> On Aug 12, 2016 11:06 AM, <jerry.tuyls at telenet.be> wrote:
> > >>
> > >>> Hello Ryan
> > >>>
> > >>> That is strange, even without pl-tone i can access the sat. Also
> > correct
> > >> the dwnlink, it sounds better(for me).
> > >>> Best 73's
> > >>>
> > >>> Jerry,ON4CJQ
> > >>>
> > >>> ----- Oorspronkelijk bericht -----
> > >>> Van: "R. S." <rzar66 at gmail.com>
> > >>> Aan: AMSAT-BB at amsat.org
> > >>> Verzonden: Vrijdag 12 augustus 2016 19:36:13
> > >>> Onderwerp: [amsat-bb] AO-85
> > >>>
> > >>> Hello all,
> > >>>
> > >>> I am having a difficult time getting into AO-85. The equipment I am
> > using
> > >>> is a Kenwood TH-F6A and an Arrow antenna. I have the PL tone set and
> am
> > >>> 's
> > >>>
> > >>> adjusting for Doppler on the transmit side. The first 4 passes I have
> > >> tried
> > >>> have been 50 deg. or more over the horizon with one being 89 and
> still
> > >>> can't get in. I can hear it very clear on the passes I have tried. Is
> > >> there
> > >>> anything I am missing? I have successfully made a contact on SO-50
> but
> > >>> AO-85 cannot hear me for whatever reason. I am a new ham  and very
> new
> > to
> > >>> satellites. Thanks for you help.
> > >>>
> > >>> 73,
> > >>> Ryan
> > >>> KM6DNG
> > >>> _______________________________________________
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> >
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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>