August 2011 - AMSAT-BB - mailman.amsat.org

ARISSat-1 Power of each beacon
by Trevor . 09 Aug '11

09 Aug '11

I gather ARISSat-1's total power output is 500 milliwatts. How many milliwatts of that is allocated to each of these downlinks - FM transmitter - BPSK Beacon - CW beacon - Transponder I couldn't find the figures on a quick read through the ARISSat.org they may be there somewhere but I didn't spot them. 73 Trevor M5AKA

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ARISSat-1: switching modes ?
by PA3GUO 09 Aug '11

09 Aug '11

Can someone point me to the ARISSat-1 mode schedules ? During the recent pass, ARISSat was the first pass in low pwr mode. During the (short) active periods I could relay short CW beeps over the transponder @5W. Midway the pass the satellite came in the sun and switched on and stayed on. But now the transponder was off. Is there an overview of sequence of modes, eg when SSTV is on Xponder off, etc. ? Henk, PA3GUO,

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A couple of interesting links
by g.shirville＠btinternet.com 09 Aug '11

09 Aug '11

hi All, I have just come across this podcast which has a very "British" approach to space history but is quite enjoyable http://audioboo.fm/boos/431009-space-boffins-podcast2 Additionally a rather longer film entitled "first orbit" - this has the exactly the same running time as Gargarin's flight http://www.firstorbit.org/ enjoy! 73 Graham G3VZV

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Re: iss beacon receive and vhf preamp
by N. Mahdinejad 09 Aug '11

09 Aug '11

Hi. I am Mrs Nayer from polytechnic(Amir Kabir) university in tehran IRAN, Telecommunication engineering student in MA degree and dont have callsign. Best Regards. On Tue, Aug 9, 2011 at 1:18 AM, nh6vb Scheller <nh6vb(a)msn.com> wrote: > Mr. Mahdinejad > > There should be no problem receiving receiving FM signals from the ISS. > What ICOM receiver are you using, and what is your QTH? > After receiving that information from you, I will give you the instructions > you need. > > 73, > Peter, NH6VB > > > Date: Mon, 8 Aug 2011 17:01:27 +0430 > > From: n.mahdinejad(a)gmail.com > > To: amsat-bb(a)amsat.org > > Subject: [amsat-bb] iss beacon receive and vhf preamp > > > > > Dear amsat members. > > > > I have some question about receiving beacon signal from ISS. > > > > Could you please help me? > > > > 1. What is the difference between ISS, ARISS and ZARYA? Is these > > > different satellites or 1 satellite with 3 name? > > 2. Which of them is easier to receive beacon from them? > > 3. Frequency of beacon signal of ISS is in VHF band. Is it available > > > without preamp? I use 2 preamp. One for VHF and 1 for UHF band. But the > > preamp in vhf band isn’t on. I mean that icom receiver could not supply > it. > > I activate preamp in vhf band in set menu of icom radio. The uhf band > > preamp on and I use it. But for vhf when I push the preamp button in > front > > panel of icom the preamp writing is visible for 2 seconds and then > > turned off and isn’t visible. > > > > Any help would be gratefully appreciated. > > > > Beat Regards. > > > > N.Mahdinejad > > _______________________________________________ > > 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 >

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ARISSat deployment direction?
by Rich Dailey 09 Aug '11

09 Aug '11

I've seen several comments and reports stating the deployment was against the ISS velocity vector. Why do I see arissat out ahead of ISS by a few hundred miles? Keps are current, and 3 tracking programs are in agreement. Can someone provide enlightenment? tnx...:-) Rich, N8UX.

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Arissat-1 today
by PY5LF 08 Aug '11

08 Aug '11

Hi My QSO with PY4ZBZ today via TPL in better conditions (less noise). Also we can see the moment when the TPL turn off after 40 seconds without sun light , I think. http://www.youtube.com/watch?v=oJ2Gujm2vtc 73 PY5LF LUCIANO FABRICIO Curitiba-PR-Brazil GG54jm <http://www.qrz.com/db/py5lf> http://www.qrz.com/db/py5lf

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SSB Preamp Dealers in Japan
by Sion Chow Q. C. (9W2QC) 08 Aug '11

08 Aug '11

Dear All, Sorry for the bandwidth again. I would be glad if anyone could advice me if there are any dealers or distributors dealing with SSB Electronic Preamps in Japan. Any pointers will be greatly appreciated, and kindly reply me off the list. Thank you. 73, Sion, 9M2CQC

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Re: receive beacon in l band and s-band
by PA3GUO 08 Aug '11

08 Aug '11

Dear N.Mahdinejad, What is your callsign and location/country ? Henk, PA3GUO >Dear Amsat members. . I am lloking forward to hearing from you. Best Regards. N.Mahdinejad.

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Re: SP-2000 Preamp?
by Stephen E. Belter 08 Aug '11

08 Aug '11

Burns, I own SSB preamps; they have worked very well for me, both on my Icom IC-821 (powered by the radio) and with my FUNcube Dongle (powered with an external bias-T from ARR). You have at least four sources for the SSB preamp: 1. Direct from SSB in Germany, www.ssb.de 2. From SSB-Electronics USA, www.ssbusa.com 3. From Array Solutions, www.arraysolutions.com 4. From Universal Radio, www.universal-radio.com 73, Steve N9IP -- -----Original Message----- Hi, I've been listening on a couple of ARISSat-1 passes, both with the bird in sunlight. The first time I vaguely heard what might have been a voice. The second time (and this one was 80 or 85 degrees elevation) I could clearly hear that there was a voice, but could not understand, although some of the pattern sounded like the call sign being announced. I may have heard a bit of SSTV too; not sure. I'm listening with a Kenwood handheld, sometimes with a 1/4 after-market antenna, sometimes with a 2M eggbeater. So clearly I need something better. Since I can pick up the ISS well enough, I think I probably need a preamp. Maybe if I were retired and had more time, I'd build one, but for now, I'm thinking to go for the top-end; that appears to be an SSB Electronics SP-2000. But so far, no answer nor return call on my message to SSB. Does anyone know of a different place to buy these things, or do they only feel through their rep? How about second hand? Anyone looking to sell one? Of course any other suggestions welcome too... Thanks and 73, Burns, W2BFJ _______________________________________________ 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

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FUNcube Dongle firmware update
by Howard Long 08 Aug '11

08 Aug '11

Folks For those of you who use the FUNcube Dongle to receive ARISSat-1, I have released a new firmware version to correct a bug in the USB streaming code which produced clicking every few seconds for some users, and also makes data decoding less reliable. The firmware image is here: http://www.funcubedongle.com/MyImages/export18i.pro.bin It is currently in test status, so any feedback is welcome. Many thanks, Howard

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