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

New host for ->Sample ARISSat-1 recording with Funcube Dongle using HDSDR
by Mark L. Hammond 10 Aug '11

10 Aug '11

Okay, silly me. Here is the file hosted on a much better server ;) ftp://ftp.amsat.org/amsat/telemetry/arissat/recordings/HDSDR_20110809_10420… 73! Mark N8MH --- On Wed, 10/8/11, Mark L. Hammond <marklhammond(a)gmail.com> wrote: > > I've been recording quite a few passes of ARISSat-1 using > > the Funcube Dongle (FCD) SDR and the HDSDR program. > > The resulting file from a 10 min pass, recording the whole > > FCD passband, is about 250MB. Below is a link to a > > sample from this morning. > > > https://docs.google.com/leaf?id=0B9vJkMVYq-VOYjM5NTNiZDYtODMyMS00NjE4LTlhYW… > > Evidently a very popular download as I see the Google limit for today has > been exceeded. > > 73 Trevor M5AKA**** > > __._,_.___**** > > Reply to *sender*<m5aka@yahoo.co.uk?subject=Re%3A%20%5Bamsat-bb%5D%20Sample%20ARISSat-1%20recording%20with%20Funcube%20Dongle%20using%20HDSDR>| Reply > to *group*<funcube@yahoogroups.co.uk?subject=Re%3A%20%5Bamsat-bb%5D%20Sample%20ARISSat-1%20recording%20with%20Funcube%20Dongle%20using%20HDSDR>| Reply > *via web post*<http://uk.groups.yahoo.com/group/funcube/post;_ylc=X3oDMTJxNG84ZHJmBF9TAzk3…>| > *Start a new topic*<http://uk.groups.yahoo.com/group/funcube/post;_ylc=X3oDMTJmdnJraTF0BF9TAzk3…> > **** > > Messages in this topic<http://uk.groups.yahoo.com/group/funcube/message/3122;_ylc=X3oDMTM1a3Z0cGQy…>( > *4*) **** > > *Recent Activity:* **** > > **· ***New Members<http://uk.groups.yahoo.com/group/funcube/members;_ylc=X3oDMTJnb25iNTk1BF9TA…> > ** 95 * > > Visit Your Group<http://uk.groups.yahoo.com/group/funcube;_ylc=X3oDMTJmZ3ByZHMwBF9TAzk3NDkwN…> > **** > > [image: Yahoo! Groups]<http://uk.groups.yahoo.com/;_ylc=X3oDMTJlbDBwN2wwBF9TAzk3NDkwNTA1BGdycElkAz…> > **** > > Switch to: Text-Only<funcube-traditional@yahoogroups.co.uk?subject=Change%20Delivery%20Format:%20Traditional>, > Daily Digest<funcube-digest@yahoogroups.co.uk?subject=Email%20Delivery:%20Digest>• > Unsubscribe <funcube-unsubscribe(a)yahoogroups.co.uk?subject=Unsubscribe> • Terms > of Use <http://uk.docs.yahoo.com/info/terms.html>**** > > .**** > > **** > > __,_._,___**** > -- Mark L. Hammond [N8MH]

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5 in EM55
by wa4hfn＠comcast.net 10 Aug '11

10 Aug '11

Congrats to Jeff NX9B award # 21 for 5 in EM55 Damon WA4HFN em55

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N3MK operation from FM27 this weekend
by Don Snider 10 Aug '11

10 Aug '11

For those looking for FM27, I'll be on the FM Easy Sats on Saturday the 13th and possibly Sunday as well. I'll probably be operating from the beach of Assateague Island IOTA NA-139. Hope to see you there, 73, Don N3MK Chincoteague Island, VA FM27

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Student Sat for Geostationary ?
by Trevor . 10 Aug '11

10 Aug '11

Strange one this, story appears to indicate that a student satellite from the Sharif University will go into a 36,000 km orbit. http://news.xinhuanet.com/english2010/sci/2011-08/09/c_131036680.htm Their domestic launch capability might appear at best to be 500km, Rasad-1 was 260 km ( pic of 465 MHz downlink at http://www.r00t.cz/Sats/Rasad ). Might imply an overseas launch or else something got lost in translation. http://www.iranmilitaryforum.net/index.php?topic=9758.0 73 Trevor M5AKA

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ARISSat-1 TLM
by Luc Leblanc 10 Aug '11

10 Aug '11

My ARISSat-1 telemetry capture is progressing at a slow pace just need to capture more frames! Pictures on: www.qsl.net/ve2dwe "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE

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Sample ARISSat-1 recording with Funcube Dongle using HDSDR
by Mark L. Hammond 10 Aug '11

10 Aug '11

Hi All, I've been recording quite a few passes of ARISSat-1 using the Funcube Dongle (FCD) SDR and the HDSDR program. The resulting file from a 10 min pass, recording the whole FCD passband, is about 250MB. Below is a link to a sample from this morning. The bird was in the sun, so it's transmitting continually, making things easier. This sample isn't perfect, but it's pretty good. It was made using my "low" array, which is a M2 2MCP14 configured for RHCP. There is a good ARR preamp at the antenna. When in the clear, it's quite good--but much of the pass is through the house and/or trees.... You can play it back using HDSDR (google it). If you've never played with SDR, you have some reading to do :) This isn't a "How To" but rather a "here it is if you want it." (The imminence of another academic year prevents me from doing a write-up with instructions...sorry.) The recording was made with NO correction for Doppler. About a minute into the recording (click to fast forward, back up, etc...it's slick) you'll see signals--CW telemetry, the BPSK telemetry, the linear transponder, and the FM voice channel. Move around, change modes, listen, etc. Back up at will, just with a click. If the bug really bites you, you can install Virtual Audio Cable (VAC) and have HDSDR use it as the output, and then configure a decoding program (like ARISSatTLM or MMSSTV) to decode telemetry and/or SSTV pics using VAC as the input. It's neat. You can print SSTV without tuning for Doppler on playback. That's not the case for the BPSK telemetry! The file is BIG, nearly 250MB... https://docs.google.com/leaf?id=0B9vJkMVYq-VOYjM5NTNiZDYtODMyMS00NjE4LTlhYW… Have at it :) Mark L. Hammond [N8MH]

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Re: Mirage preamps
by Sebastian, W4AS 10 Aug '11

10 Aug '11

My thanks to everyone who has responded. 4 out of 4 say it's ok to use the 847 to power the preamp. I put up the 432 one today, but with the KP2 control box, just in case. But I will go ahead and remove the box, and let the 847 power it. One interesting response was to be careful if there is anything inline between the rig and preamp. Lightning protection, or even an SWR power meter, could affect the sending of voltage. 73 de Sebastian, W4AS On Aug 9, 2011, at 3:16 PM, Lowell White wrote: > Hi Sebastian, > > I'll be interested in knowing that also... thanks for asking. > I also have an FT-847 in my stable and have the KP2/2m on my "soon to acquire" > list. > > 73, > > Lowell > K9LDW > > > ------ Original Message ------ > Received: Tue, 09 Aug 2011 11:34:22 AM CDT > From: "Sebastian, W4AS" <w4as(a)bellsouth.net> > To: AMSAT-BB <amsat-bb(a)amsat.org> > Subject: [amsat-bb] Mirage preamps > >> Before I destroy these, is anyone using Mirage KP-2 mast mounted preamps > with a Yaesu FT-847? >> >> I picked up a couple of them recently, and they came with the control box > (which appears to be a bias tee) that supplies 12 volts via the coax line, in > order to power them. >> >> The FT-847 can already supply 12 volts up the coax to mast mounted preamps; > but I wonder if these Mirage preamps require the use of the control box for > some reason. I would prefer to use the rig to power the preamps, but the > manual doesn't mention that option. >> >> 73 de Sebastian, W4AS >> >> >> >> _______________________________________________ >> 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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Perseids - Watch Early!
by Clint Bradford 10 Aug '11

10 Aug '11

Perseid Meteor Shower Peaks Friday, But Watch Tonight - Wired.com - http://bit.ly/o6JKHT Clint Bradford clintbradford(a)mac.com

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SP-2000 Preamp?
by Burns Fisher 10 Aug '11

10 Aug '11

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

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W9EN in EN53
by John Belstner 10 Aug '11

10 Aug '11

Thank you for the SO-50 contacts today. I'll be here for the week and will try to make as many of the midday passes as possible In the haste of things today, I think I slipped up a few times and said DN53 instead of EN53. My apologies, CRS kicking in I guess. Please email me for a QSL and I'll be happy to get one out in the mail. 73 John - W9EN

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