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

Sat May 4 20:10:47 UTC 2019

Forgive me, I see those are PSAT packets. Dunno what its power is.

73, John Brier KG4AKV

On Sat, May 4, 2019, 16:09 John Brier <johnbrier at gmail.com> wrote:

> 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
>> > >> > AMSAT-NA.
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>> > >> AMSAT-NA.
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>> > >
>> > _______________________________________________
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>> > to all interested persons worldwide without requiring membership.
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>> > expressed
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>> > _______________________________________________
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>> > to all interested persons worldwide without requiring membership.
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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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>