[amsat-bb] ARRL Antenna book, eggbeater antenna designs

Sat May 4 20:09:14 UTC 2019

Not disputing the utility of egg beaters, but fwiw the ISS is the most
powerful ham transponder we have. The Ericsson is speced at 4 or 5 watts.

73, John Brier KG4AKV

On Sat, May 4, 2019, 16:02 KE6BLR Robert via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> >>> 7 DEGREES RX via EggBeater <<<
>
> N6DAN-1 gets APRS packets on 145.825 MHz as low as 7 degrees via the
> EBB144.
>
> See Tweet of report:
> https://twitter.com/MachaleRobert/status/1124763800865873920
>
> I asked him to leave the EBB on the N6DAN-1 iGate for the entire month of
> May to get performance metrics. He also has a directional antenna for
> N6DAN-2.
>
> For the pSat, you can monitor the TX and RX angles here:
>
> http://www.spaceCommunicator.club/igates/
>
> 73s
>
> Robert
>
>
> On Fri, May 3, 2019 at 4:03 PM Bob Liddy (K8BL) via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
> >  I got a good chuckle out of KG5CCI's link to the MFJ Dummy
> >   Loads.
> > Quite a few years back, I picked up a pair of the M2 Eggbeaters at a
> > Hamfest for $150. I put them up with some 9913 and found that they were
> > very close to being Dummy Loads in the sky. That was probably why the guy
> > was selling them so cheap. They were sold again a couple years ago at
> > Dayton for the same price. Lesson learned.
> > I always thought the concept was very good, but the results were very
> > disappointing. That was before the excellent performing SATs we have up
> > there now. Maybe they would have moderate success now, but I wouldn't get
> > my hopes up.
> > My suggestion would be to get/build a couple small Yagis and put them on
> a
> > mast several feet apart with the 70cm above and the 2M below with one
> > vertical and one horizontal polarized. Tilt them up 15-20 degrees and a
> > cheap TV Rotor is all you need. The tilting can  be done by fashioning a
> > mast-to-boom plate drilled for the desired  angle for each antenna. Or,
> you
> > could merely bend the mast that small  amount. This should give you
> > reasonable success until you decide you  have the experience to get more
> > sophisticated and will not have spent  a bunch of money initially.
> > GL/73,     Bob  K8BL        (AMSAT #6593 since 1979)
> >
> >     On Friday, May 3, 2019, 5:00:48 PM EDT, David Swanson via AMSAT-BB <
> > amsat-bb at amsat.org> wrote:
> >
> >  Hi Sean!
> >
> > I don't recall seeing any name calling here until your post, I genuinely
> > want to make sure the author of this thread who has sent numerous emails
> to
> > this list explaining how to operate gets the best tips in regards to
> their
> > planned build. I'm actually in the process of building the setup I
> > recommended and will plan on doing a demo for folks sometime here soon,
> > stay tuned!
> >
> > -Dave, KG5CCI
> >
> > On Fri, May 3, 2019 at 3:51 PM Sean Waite <waisean at gmail.com> wrote:
> >
> > > Ah, yes, rather than maybe educate someone let's just berate them and
> > > functionally call them an idiot.
> > >
> > > Eggbeaters have a bad rap because they don't necessarily hear well. You
> > > may be making it into the bird but not hearing yourself, so you keep
> > tuning
> > > around and calling trying to find yourself only to be deaf-ly QRMing
> > other
> > > stations. I have no experience with them, but that's what I've heard.
> > >
> > > 73,
> > > Sean WA1TE
> > >
> > > On Fri, May 3, 2019 at 4:49 PM David Swanson via AMSAT-BB <
> > > amsat-bb at amsat.org> wrote:
> > >
> > >> Instead of building eggbeaters, pick up a few of these:
> > >>
> > >> http://www.mfjenterprises.com/Product.php?productid=MFJ-261
> > >>
> > >> You'll also need a pair of these:
> > >>
> > >> https://www.amazon.com/Coaxial-Cable-Female-SO239-PL259/dp/B00KQHH7VC
> > >>
> > >> Hook those into your baofengs and you'll be just as effective on the
> > >> Satellites as you would with some homemade 'beaters.
> > >>
> > >> Good luck! 73!
> > >>
> > >> -Dave, KG5CCI
> > >>
> > >> On Fri, May 3, 2019 at 3:19 PM Devin L. Ganger via AMSAT-BB <
> > >> amsat-bb at amsat.org> wrote:
> > >>
> > >> > Greetings, programs!
> > >> >
> > >> > I'm looking to work with my son (who will be studying to get his
> > >> > Technician license later this month) on building a UHF/VHF pair of
> > >> > eggbeater antennas. I've found a few papers online, but does anyone
> > >> have a
> > >> > good reference to a detailed design?
> > >> >
> > >> > Does the ARRL Antenna book latest edition have any significant
> > coverage
> > >> of
> > >> > eggbeaters at all? I have an older version that has nothing.
> > >> >
> > >> > Also, most of the designs I see are for a single band. If you're
> > >> deploying
> > >> > a pair for satellite operations, do you simply attach them through a
> > >> > duplexer? I have a Diamond MX-72N that I picked up a while ago for
> > using
> > >> > with dual Baofengs, but it's been sitting in my drawer since I
> picked
> > >> up my
> > >> > TH-D72A. It has a 1.6~150MHz lead and a 350~460MHz lead.
> > >> >
> > >> > Thanks in advance for any pointers you might have.
> > >> >
> > >> >
> > >> > --
> > >> > Devin L. Ganger (WA7DLG)
> > >> > email: devin at thecabal.org<mailto:devin at thecabal.org>
> > >> > web: Devin on Earth<http://www.devinonearth.com/>
> > >> > cell: +1 425.239.2575
> > >> >
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> views
> > of
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> _______________________________________________
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> 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.
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