September 2009 - AMSAT-BB - mailman.amsat.org

Symposium
by Peter 25 Sep '09

25 Sep '09

Are there to be any live webcams during proceedings please? Peter G0BHP A/UK

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NA1ISS on SSTV
by Andrew Rich 25 Sep '09

25 Sep '09

---------------------------------------------------------- Andrew Rich Airways Technical Officer Grade 4 Surveillance - RADAR ADS-B Amateur Radio Callsign VK4TEC email: vk4tec(a)tech-software.net web: www.tech-software.net

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keps
by Nigel Gunn G8IFF/W8IFF 25 Sep '09

25 Sep '09

OBJECT B 1 35866U 09049B 09267.76020534 .00000178 00000-0 10000-3 0 93 2 35866 098.8007 317.9269 0004133 060.3718 299.7853 14.22295747 1002 FREGAT/IRIS 1 35867U 09049C 09267.69394093 .00002263 00000-0 10000-3 0 198 2 35867 097.3746 317.6403 0008464 263.5757 096.4296 15.22710586 1068 OBJECT D 1 35868U 09049D 09267.83160977 .00000177 00000-0 10000-3 0 87 2 35868 098.8002 317.9921 0005081 049.3513 310.8105 14.22084474 1016 OBJECT E 1 35869U 09049E 09267.76177426 .00000176 00000-0 10000-3 0 86 2 35869 098.7994 317.9179 0005335 062.0519 298.1173 14.21977659 1008 SUMBANDILA 1 35870U 09049F 09267.78307389 .00002270 00000-0 10000-3 0 136 2 35870 097.3732 317.7200 0009971 269.7680 220.7453 15.22799899 1072 BLITS 1 35871U 09049G 09266.63701220 .00000174 00000-0 10000-3 0 32 2 35871 098.7988 316.7964 0004515 058.7014 301.4616 14.21537025 237 -- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel(a)ngunn.net www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN.

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UWE-2 decoded
by Mike Rupprecht 24 Sep '09

24 Sep '09

20:50 UTC 437.505 MHz 1k2 AFSK one packet decoded :-) 2009-09-23 20:50:52.910 UTC: [52 Bytes KISS Frame (without CRC)] ctrl: 3 PID: F0 {UI} 33 Payload Bytes from DP0UWF to DD0UWE-9: 1 > 53 01 1E F0 05 F0 07 F0 1F F0 0D F0 05 F4 3B F3 AD FD F0 FD 21 > C2 F4 02 F2 3C F2 7B 01 01 02 1E 01 22 73, Mike DK3WN

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North America - ISS Next Pass School QSO Scheduled
by JoAnne Maenpaa 24 Sep '09

24 Sep '09

Hi everyone, Here is short notice for those you lucky enough to be near your radio. The next ISS pass over the USA will be a school contact so tune in on 145.800. Cedarview Middle School, Ottawa, ON, Canada, direct via VE3TBD Contact is a go for Thu 2009-09-24 19:07:56 UTC 51 deg My Nova screen shows the flight path as going from Baja California to Newfoundland so this is a nice mid-continent pass! -- 73 de JoAnne K9JKM k9jkm(a)amsat.org Editor, AMSAT News Service Copy Editor, AMSAT Journal

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Re: CW beacon Heard
by John Mock KD6PAG 24 Sep '09

24 Sep '09

> Just heard a CW beacon on 437.385 with Doppler. It was 56-57. I was > looking for the cubesats just launched by PSLV. As per the estimated > TLEs, those Sats were within my AOS at 08.03 Z with 10 degree (W) > elevation . Any confirmation on this ? I also heard something like this, pretty weak and fairly brief, from CM88 at the same (uncorrected) frequency. If i had not seen the previous report, i would not have posted anything. I was not able to hear SumbandilaSat, but i can't say that's at all conclusive. -- KD6PAG

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Arrow antenna reconfiguration results
by Jeff Yanko 24 Sep '09

24 Sep '09

Hi all, After being off the air for about a month, I recently made some changes to the satellite setup. I upgraded from the TH-D7A(G) HT to the TM-D710A mobile dual bander. Yes, a bit bulkier, but worth its weight. Anyhow, I know many sat operators use the Arrow antenna setup, like what I've been using the past 7 or so months with great results. However, I've always known that the diplexer that comes with the unit is reather lossy. From some reports I've read as much as 2.65dB of loss. That's almost half of whats being received or transmitted being thrown away. When I layed out the new portable setup I made it an issue to "lose" the diplexer and put one in line that would perform better. I purchased the Comet CF-416. It's loss is about .26dB. A considerably less amount by far and if needed in other applications it can handle more power than the 10 watts alotted for the Arrow's diplexer. I also bought some good quality RG-58 coax, only 6 feet in length, for both 145 and 440, so there isn't much loss from this. About .6dB according to the data sheet. After the assembly and installation was complete, on air usage was next. AO-27 had a fairly decent pass to the east of the QTH with a max elevation of 24 degrees. I've remembered how the passes sounded previously at this elevation so I could get a mental comparison. As the bird's timer turned the digital transmission on I noticed one thing immediately, the signal was clearer and no hiss. The analog timer swtiched on and the voices became copiable. The signal appeared to be a bit stronger than the old setup with the Arrow antenna but the most remarkable improvement was from the time I started to receive the signal to near LOS, it never once dropped out! It almost appeared as though I changed my linear antenna to a CP with a preamp. I figured this is too good to be true. I then decided to test it with AO-51 and see how well that bodes. I noticed I was copying the signal closer to the horizon than the previous set up and again the same results with no drop outs, except for the one time the house blocked the signal for about 20 seconds. So if anybody is considering improving their current Arrow antenna, please do so by getting a better diplexer. They are not expensive, $40 to $60, and of course some decent coax, short runs are better but give yourself enough slack so you don't cut yourself short! See you on the birds! 73, Jeff WB3JFS Las Vegas, NV DM26

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Some successful experiment and beep-sats
by William Leijenaar 24 Sep '09

24 Sep '09

Hi AMSATs, I like to share with you some news about my succesfull experiments with my tinny transponder. I managed it to work with 23cm as input frequency :) The changes are minor, just a few components to be changed and the input filter needs to be changed. I have to do some more testing but all looks very well for having an mode-LU linear transponder. I just heared about another launch with several "beep"-sats on it. When checking the Satellite Status List on the AMSAT-NA website, you need to search very well to find any satellite which has an uplink frequency. As active AMSAT operator I already deleted most of the kepler lines in the kepler list, as these are all "beep" sats which I can not use. Lucky thing is that I not have much time to be active on satellites, but every once in a while when I check the satellite list my face gets more and more :( In the past we had a few satellites, but they were very usefull (to AMSAT hams)... Now we have many satellites, but only few are usefull (to AMSAT hams)... Now up to my next project... a credit-card size Mode-B FM transponder :o) 73 de William, PE1RAH ---

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BL02 on Ao51
by RONALD CADE 24 Sep '09

24 Sep '09

Aloha I will be operating from bl02 this afternoon at 4:50 Hawaii time, west coast 7:50pm. This is a 11 degrees pass lasting about 11 minutes. W6ZQ/KH6

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Cubesats heard
by Mike Rupprecht 24 Sep '09

24 Sep '09

ITUpSat 12:54 UTC 30 deg pass - spread CW signal itupsat hr ta1ks itupsat hr ta1ks SwissCube 12:47 UTC hb9eg/1 - at4 - uvu4vue - vttutvtvb - hb9eg/1 BeeSat - 12:56 UTC strong 4k8 GMSK signals till LOS See here: <http://www.dk3wn.info/p/> http://www.dk3wn.info/p/ 73, Mike DK3WN

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