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

Sat May 4 19:58:40 UTC 2019

>>> 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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> >> > 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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> >> >
> >> _______________________________________________
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> >> to all interested persons worldwide without requiring membership.
> >> Opinions expressed
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> >> AMSAT-NA.
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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
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> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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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!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>