November 2008 - AMSAT-BB - mailman.amsat.org

Fw: Re: LVB tracker
by Dirgantara R YF0EEE 28 Nov '08

28 Nov '08

----- Original Message ----- From: <i6kzr(a)i6kzr.it> To: "Dirgantara R YF0EEE" <enggi1401(a)gmail.com> Sent: Friday, November 28, 2008 4:56 PM Subject: Re: [amsat-bb] Re: LVB tracker > Hi Mike, > Which program are you using with LVB tracker? > > I at the moment use Predict for Linux. > > Thanks, I6KZR Renzo > > > ----- Original Message ----- > From: " Dirgantara R YF0EEE" <enggi1401(a)gmail.com> > To: <k9qho6762(a)sbcglobal.net>; <amsat-bb(a)amsat.org> > Sent: Friday, November 28, 2008 9:09 AM > Subject: [amsat-bb] Re: LVB tracker > > > > hi Mike > > > > > > thanks for the response, I want to try LVB tracker, just for now i have > > KR-400 and KOPEAK rotator > > > > 73 de YF0EEE > > > > ----- Original Message ----- > > From: "WILLIAMS MICHAEL" <k9qho6762(a)sbcglobal.net> > > To: <amsat-bb(a)amsat.org> > > Sent: Friday, November 28, 2008 9:16 AM > > Subject: [amsat-bb] Re: LVB tracker > > > > > > Sir: > > > > I modified an old Wilson WR-500 rotor (azimuth) to work with the LVB > > tracker. > > > > I believe any rotor could be homebrewed to work. > > > > GL > > > > Mike (K9QHO) > > > > AMSAT 33589 > > > > Message: 5 > > Date: Thu, 27 Nov 2008 14:25:51 +0700 > > From: " Dirgantara R YF0EEE" <enggi1401(a)gmail.com> > > Subject: [amsat-bb] LVB tracker > > To: <amsat-bb(a)amsat.org> > > Message-ID: <00c601c95061$69f34450$1c3d3a72@YD1EEE12> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Hi everyone > > > > any body use LVB tracker use KR-500 and KR-400 rotator, > > how about a performance and accuracy for elevasi and azimuth ? > > > > > > 73 de YF0EEE > > _______________________________________________ > > 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 > > > > > > _______________________________________________ > > 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 > > > > > >

1 0

AO-51 reload
by Andrew Glasbrenner 28 Nov '08

28 Nov '08

It looks like we'll be reloading AO-51 for Thanksgiving. Gould started the process this evening, and I expected it'll be Saturday or later before it's back open for general use. 73, Drew KO4MA

3 2

SO 50
by Jim Danehy 28 Nov '08

28 Nov '08

from day 1 I have enjoyed SO 50 . . . . never a problem for me . . . a few locals here in my area complain about it being a difficult bird . . . . for me it is good from horizon to horizon . . . while not populated like AO 51 (thank you) it has good use from my perspective . . . I use an Icom 910H and I always switch on the AFC which locks in on the received signal and tracks it . . . so if there is a slightly different frequency from the one that has been announced I would never know it . . .

2 1

SO-50 eludes me
by Mark Lunday, WD4ELG 28 Nov '08

28 Nov '08

I have worked every bird several times: AO7, AO16, AO27, AO51, FO29, VO52. But I have never worked SO50. Tonight I had a pass DIRECTLY overhead. I tried the standard initiation call with 74.4 CTCSS, and then calling with 67 Hz. Never heard a thing. In fact, I don't think I have ever heard SO50. I triple-checked the Doppler, turned down the squelch, turned up the RF gain. Not a peep. Even with only my Arrow yagi fixed at 30 degrees EL, I should have heard something. All I heard was the rush of static. I know this bird is lower orbit and smaller power out, but I should hear something, right? Mark Lunday WD4ELG wd4elg(a)arrl.net http://wd4elg.net

4 4

Re: SO-50 eludes me
by John Marranca, Jr 28 Nov '08

28 Nov '08

Good Morning, all... Also, it's worth mentioning that AT TIMES, it seems as though the downlink frequency is off...by as much as 5 KC. Anyone else notice that...or am I going crazy? John KB2HSH -- _______________________________ John Marranca, Jr PBX Technician/Shop Steward CWA Local 1122 BN Systems, Inc Orchard Park, NY (716)972-2006

3 2

... and they said it couldn't be done.
by John Hackett 28 Nov '08

28 Nov '08

It's amazing what a bit of inginuity (and downright tenatiousness ......GM1SXX) can do. That and a bit of help from my friend Percy ... (perseverance). When I *RIPPED* down the aerials due to the newly inposed restriction. I thought my Anne Logue satellite days were over. Never having being 'excited' by single QSO FM (on a satellite) I thought "that's yer lot" John matey. However ... hearing such rot!!! regarding the power to work AO-7 (mostly from the American side, I might add, something I believe is entirely due to Amsat's FM policy) I decided to see just what 'could' be done. Having what is now IMHO a worst possible case scenario, that is, 22 year old rigs (no CAT interface for doppler tuning), a ground floor flat without access to loft space, total aerial restrictions outside, surrounded by mountains on 3 sides and a maximum output power of 5 watts on CW. I still managed to contact F6 something-or-other this morning. Presumably, my uplink on AO-7 mode-B was readable to those whom actually have a receiving aerial because two stations answered my CQ. The 7 element Arrow giving me a giant EIRP of about 40 watts ... however, my downlink signal, just 3 elements on 2m, indoors !!! definately left a *LOT* to be desired. I could hear myself - but then, I 'knew' I was there. Two stations did answer but since they both answered at the same time (err ... I forgot, what did you say full duplex meant?). I ask because they 'both' continued to reply to La2qaa/QRP ... the only thing I managed to copy was de F6 some-thing-or-other ... when I sent an interogatory (QRZ) they both disappeared. I waited a while to see if either of them would try again but they didn't. As I have mentioned so many times before, you really *DON'T* need 10 elements and an 'effing' *BIG* BRICK to work AO-7 - (or any other of the LEO's for that matter). I do apologise for the rather offbeat keying, my keyer is made from 2 x back-to-back computer microswitches taped to the palm of my hand ... BECAUSE I WAS WAVING THE AERIAL ABOUT WITH THE OTHER HAND ... of course. For bthe affluent on the other side of the pond this weekend, enjoy yout turkey. For the 'moderately' affluent, enjoy your chicken - for the remaining ... enjoy you egg. Happy Thanksgiving. Relax !!!, the Europeans ... the geese are still getting fat. 73 John. <la2qaa(a)amsat.org>

1 0

Birds Never Worked
by John Marranca, Jr 28 Nov '08

28 Nov '08

WD4ELG said: "I have worked every bird several times: AO7, AO16, AO27, AO51, FO29, VO52." I've never been able to get anywhere with GO-32. THAT satellite is the "one that got away" for me. I have had passes that were near vertical to me...and I've never done it. John KB2HSH -- _______________________________ John Marranca, Jr PBX Technician/Shop Steward CWA Local 1122 BN Systems, Inc Orchard Park, NY (716)972-2006

1 0

Re: soundcard modems for pactorIII
by Oscar Diez 28 Nov '08

28 Nov '08

George Henry wrote: > Perhaps you are unaware that, even after you purchase an SCS Pactor modem, you must purchase a license to use the Pactor III protocol... and trying to circumvent the licensing requirement is probably illegal just about anywhere in the world, not just in the U.S. > > You *have* heard of intellectual property rights, haven't you? Yes, sure we have! But in this very particular case the owner of these rights can only enforce them in those countries where they have got granted patents and they are still active/maintained (periodic fees paid to local patent offices). I am not aware of the list of countries in which they filed their PACTOR III related patents, but since SCS is a relatively small company I would guess they only cover the most important countries, where possible competition could pop-up or where most of the users would be located: e.g. USA & Europe and eventually for strategic reasons Japan, China and very selectively a few more (= cost, cost, cost)... It should be therefore easy for one of those very talented Russian or Ukranian programmers to write a software PACTOR III modem variant and publish it on a Russian web-server to make it publicly available and this even fully legal in case there is no patent granted in Russia (which I think is quite unlikely that it was filed there) Then only the people downloading it in the States or Europe (or other patented countries) for instance and starting to use it are infringing the patents (not the programmer/distributor in this case) and SCS could theoretically sue them. (but would become extremely complicated to manage in real life due to various factors) Actually it would be a very similar story to some of the MP3-Encoders floating around on internet - infringing some German Fraunhofer Institute audio compression patents in many countries. Sorry for this off-topic posting, but I could not leave the bold IP rights statement of George uncommented, hi ! Oscar, DJ0MY

4 3

Re: LVB tracker
by WILLIAMS MICHAEL 28 Nov '08

28 Nov '08

Sir: I modified an old Wilson WR-500 rotor (azimuth) to work with the LVB tracker. I believe any rotor could be homebrewed to work. GL Mike (K9QHO) AMSAT 33589 Message: 5 Date: Thu, 27 Nov 2008 14:25:51 +0700 From: " Dirgantara R YF0EEE" <enggi1401(a)gmail.com> Subject: [amsat-bb] LVB tracker To: <amsat-bb(a)amsat.org> Message-ID: <00c601c95061$69f34450$1c3d3a72@YD1EEE12> Content-Type: text/plain; charset="iso-8859-1" Hi everyone any body use LVB tracker use KR-500 and KR-400 rotator, how about a performance and accuracy for elevasi and azimuth ? 73 de YF0EEE

2 1

Receiveing satellites beacon with soundcard!
by nader omer 28 Nov '08

28 Nov '08

HI Many friends ask about my setup for receiving satellites TLM by soundcard AWGPE and UISS software's at speed of 9600 bps. I think most of the data at 9600 bps ruin or not reach the sound card if you use interface with audio isolation transformer (1:1) or interface with Optical isolation IC as in most of the ready made brand interfaces! (still I'm testing this hypothesis with homemade interface and commercial brand interfaces ). Actually you do not need interface at all to receive TLM data! Just take the (sound!) (data) from the your Rig data socket (Make sure it's pin for 9600) and feed it direct to the soundcard mike input. Configure the AGWPE to work at 9k6 bps. (If you face any problem delete the ini file and start again) Make sure your Rig at 9600 bps rate. AWGPE do all the show behind screen. If your rig has AFC put it on. If you have a simple soundcard keying circuit, key your Rig and listen to your transmission at 9600 your will hear dumb soft sound .Compare that to 1200 with other setup to AWGPE to see if AWGPE works ok at 9600 speed .you need other radio to listen. You can make several copy of the AWGPE each with deferent setup for baud speed. I'm using none pro edition of awgpe . Make many copies on the desktop and play with them. Avoid using the same AWGPE to set many com and on air baud rate on the same copy. I have here 4 copies one for 1200 bps one for 9k6 bps other for TNC . I'm using IC-910 with AFC that help to correct Doppler and did a great job for receiving Data. OS is XP .CPU 500.soundcard from Creative. Antenna Homebrew 12 EL UHF Yagi vertical polarization with PRE-AMP I wish if WISP and EchoTLM softwares work under AWGPE !! more info at my webside link http://www.st2nh.com/satellites 73 de Nader st2nh www.st2nh.com

1 0