Psat is one of the weakest satellites up there. It is only 0.25W AND that is FM packet. So when you compare that to a 0.1W linear downlink, which is on al the time, the average power of PSAT is only 0.025w. But it was the only transmitter we had at the time. PSAT2 will be 1.5W or about 8 dB stronger.
Bob, Wb4APR
On Sat, May 4, 2019 at 6:11 PM KE6BLR Robert via AMSAT-BB < amsat-bb@amsat.org> wrote:
I'll add the TX/RX angles for the ISS so we can compare those too.
73s
Robert KE6BLR
On Sat, May 4, 2019 at 1:11 PM John Brier johnbrier@gmail.com wrote:
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@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@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@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 viaAMSAT-BB
<
amsat-bb@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@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@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@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@thecabal.orgmailto:devin@thecabal.org > > web: Devin on Earthhttp://www.devinonearth.com/ > > cell: +1 425.239.2575 > > > > _______________________________________________ > > Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum
available
> > to all interested persons worldwide without requiring
membership.
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views
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Sent via AMSAT-BB@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