Technical papers are solicited for presentation at the 26th Annual ARRL
and TAPR Digital Communications Conference to be held September 28-30,
2007 in Hartford, Connecticut. These papers will also be published in
the Conference Proceedings (you do NOT need to attend the conference to
have your paper included in the Proceedings). The submission deadline is
July 31, 2007. Please send papers to:
225 Main St
Newington, CT 06111
or you can make your submission via e-mail to: maty(a)arrl.org
Papers will be published exactly as submitted and authors will retain
73 . . . Steve, WB8IMY
I have both a commercial and a homebrew Eggbeater and am disappointed with both, especially in light of its rather high price. Connected to my IC-7000 via an ARR mast-mounted preamp, performance is far less than with an HT and an Arrow. Guess an omni can't cut it, at least not from my QTH.
Maybe if I could get it up higher, clear of all roofs, it would do better. I can make contacts at relatively high sat elevations, but can do just as well with a $10 dual band ground plane. My friend has an Eggbeater and the same preamp at a clearer QTH, and he hears substantially better, down to 10 degrees elevation in some directions.
Good luck and 73,
> > Hi Steve,
> > It is surprising to read that you are not hearing
> anything. I have
> > repeatedly used a 2m and 70cm Eggbeater for the sats
> and have had no
> > problem hearing things. No pre-amp.
> > I was using a short cable (e.g. less than 10 meters).
> The rigs I
> > used were a FT-736r (deaf) and a FT-847 (so-so).
> > 73,
> > Dave
We have met the enemy and they are us. WE need to do something. Yes, $15m is
outta reach, but isn't there a cash prize for the first on-commercial moon
DM78qd // KA0SWT
If it weren't for Philo T. Farnsworth, inventor of television, we'd still be
eating frozen radio dinners.-- Johnny Carson
From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On
Behalf Of Jeff Davis
Sent: Thursday, July 02, 2009 9:35 AM
Subject: [amsat-bb] Re: The Moon is our Future
On Thu, Jul 02, 2009 at 06:48:51AM -0600, Jack K. wrote:
> communications anyway) and move forward... We can put up all the leos
> we want, but until someone makes something like B. Bruninga's cell
> concept work, we are only going to have more of the same, We don't
> need more of the same!
I couldn't agree more - we don't need more of the same.
If I want to sit back and have a two hour rag-chew with someone on the other
side of the planet I will use Skype or my cell phone!
Dreaming about what *might* be in space is a fun exercise. Actually doing
something about it requires sending things to LEO because reality has
dictated that's as far as we can afford to go.
How's about we use some of that frustrated *imagineering* to come up with
interesting new concepts at LEO? We don't need any more FM repeaters buzzing
overhead, but what about more cameras downloading HD images, scientific
payloads that monitor the ongoing climate change, payloads to study the
Earth's magnetic field, etc. etc. Our own 'Twitter' messaging network from
The Apollo 13 creed of "failure is not an option" has completely infected
the brains at AMSAT and this list. You want something at HEO or on the moon,
cut a check for $15 million dollars and let's get on with it. Been waiting
since 1996 for another AO-13 and I am getting too old to keep waiting.
AMSAT is becoming completely irrelevant as it strives without success for
the impossible mission and exhibits a shocking amount of leadership
malfesance as it stubbornly refuses to recognize and adapt to realities in
the launch business.
I know, I know maybe NEXT year someone rich will die and leave us a boatload
of cash. Or the bankrupt US government will suddenly cough up a billion
dollars for some orbiting emergency communication system. In the meantime we
have to stifle the truth because it might blow yet another *secret* deal
that's in the works and *almost* a done deal, so let's not complain publicly
and ruin it.
Heard the stories, heard the lies, got all the t-shirts and ball caps.
AMSAT-NA member since 1994,
Skeptic that we will ever go back to HEO since 2002
Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author.
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But a question that has always nagged me... Perhaps someone on the BB knows the answer?
I understand that the early Oscars got their ride into space by replacing a piece of concrete (or similar dead weight material) with our satellite. That's why they have the shape that they do (looking like a segment of a ring).
But what about the antenna? Was it deployed after launch, or did it ride into space already sticking out the side? An on-orbit deploy would have been excessively complicated for that era (it's even difficult today!), but I can't see something like that surviving launch intact, either.
> Date: Wed, 30 Dec 2009 23:07:25 +0000
> From: m5aka(a)yahoo.co.uk
> To: amsat-bb(a)amsat.org
> Subject: [amsat-bb] ARRL Sat Article
> Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hotmail: Trusted email with powerful SPAM protection.
I've had a good look round the forums and on the net generally, I'm
coming into satellites as a newcomer, having spent
my past 15 ham years on HF/6M CW/DIGI modes. (with a bit of DSTAR
So a few questions I hope you can answer and update me....
i) Generally what power levels are needed to access the birds...?
ii) Antenna's - I've read a lot about the arrow antenna - how good is
this antenna would you recommend for a new comer ?
iii) HT or Base Transceiver - How realistic is working satellites on an
HT with 5W ? & is base transceiver preferred ?
iv) Following on from the above - I've read about the FT-2000 or FT-847
which would be better suited to satellites or another rig ?
v) Obviously a rotator / elevator with a beam(s) will give a better
performance, but what sort of performance could I expect out of an arrow
on a tripod with an HT & 5W ?
vi) On the HT subject - is it necessary to use 2 HT (one TX / one RX) or
will just one do ?
vii) ....and finally...some have mentioned that not all the sats listed
on the AMSAT page are live - where can I get the most upto date list of
satellites that are active & their frequencies / modes..?
Thats it for now - hope you can help...chances are I may have some more
RH / G0TKZ
Today I noticed AO-16 buzzing over NA this afternoon, with it's signal abruptly cutting off, and later back on a few times for several minutes, as it aproached the North Pole.
I've no idea of the signifigance, if any that this behaviour indicates about it's declining health... or perhaps a command station was working with it at the time?
Auke de Jong
My first contact on satellite was 29-Dec-08 via AO-51 and the QSO was
appropriately with Clint Bradford, K6LCS. It is appropriate that it was
with Clint because Clint is the one that sparked my interest in working
satellites. I remember reading about amateur radio satellites in my
Technician exam preparation book where it was discussing the various forms
of amateur radio. I also distinctly remember the impression that the author
said working satellites was challenging and not easy to do. Along comes
Clint to do a demo at one of the PAPA System monthly breakfasts with his
Arrow II and an HT and showed just how easy it can be.
At that point I was intrigued enough to put an Arrow II on my Christmas wish
list and a few days after Christmas, I got myself on AO-51. I remember that
first pass seemed very busy but Clint and I had pre-arranged to work it and
having that successful contact fanned the fire. The next morning I got up
early and drove over to a local hill with no trees and buildings so that I
could work an early morning easterly pass of AO-51. I easily worked N9AMW,
K8YSE and K9QHO and I would say that it was that pass that firmly implanted
the satellite bug because that day I started designing an easy to use log
sheet to keep track of AOS, Max El, LOS, call signs, etc.
Trying to hold the antenna, a clipboard/pen and radio while tracking AO-51
in the sky, making QSOs and logging call signs, times and grid squares must
have looked pretty comical for the neighbors, but I never even noticed. I
added a clipboard lamp, a little digital clock and figured a way to mount
the antenna and radio on a tripod. This made things a lot easier but it was
still a chore to set up.plus now that I was not totally consumed in all I
had to do, I was noticing neighbors with raised eyebrows as I set-up in the
>From that early start I graduated to a gable-mounted G-5500 with my Arrow II
and SatPC32.now I could operate from the comfort and privacy of my indoor
shack (and yes, there have been many early morning passes worked while in a
bathrobe). This past Thanksgiving I finally got a short rooftop tower with
high gain antennas and polarity switches. What a world of difference!
SO-50 is like a whole new satellite!
After year 1, I have 1500+ QSOs, 130+ unique grid squares and I'm still
hunting for my last five states. I've made several friends that I QSO with
regularly, sometimes multiple times in a day. I've enjoyed working the new
birds SO-67 and HO-68, unusual modes like AO-51 SSB/FM and I'm working to
get my S-Band set-up working and a couple of 70cm helix antennas built and
put into use (thanks to Mike/K9QHO for the info and encouragement).
Happy New Year to everyone and hope to work you on the birds sometime!