May 2013 - AMSAT-BB - mailman.amsat.org

J-Pole Antenna
by Werner, HB9BNK 13 May '13

13 May '13

The antenna, that I want to build, is described in a paper (probably 20 years old) by Dick, WD4FAB, titled 'Antennas for microsat ground stations', and the paper describes the large time, a LEO remains at low elevations - about 76 % below 20 degrees - and then concludes, that this is fine for a J-Pole. I am aware of the fact, that the microsats (AO-16 et.al.) had a mean altitude of 800 km, while my 'targets' fly (sometimes) at higher altitudes. So, some problems are to be expected. (In fact, I was working with a small yagi with fixed elevation of about 15° for several years but my rotor has problems and the access to it is complicated and the repair also, so that I decided to try something simpler until the rotor is fixed - or replaced. Living in a tight environment, I cannot put up a nice antenna system, but to compromise is part of our hobby.) So, I keep you informed about my results. 73 Werner, HB9BNK

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Re: Satellite Demonstration Passes for Dayton 2013
by Rodney Waln 13 May '13

13 May '13

hi forgive me if i am wrong but is HO-68 operational again for SSB,FM ...ect during your demo, i thought that they were still haveing problems with it, or is it back to normal? i am going so i will stop by, Rodney kc0zhf

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Re: ISS HamTV Frequencies
by I0ELE 13 May '13

13 May '13

Farrell, HAMTV equipment will be delivered to the ISS in August (TBC) by the Japanese HTV-4 cargo. You can check on the web the exact date. Then we will start the commissioning soon and we will start the transmissions soon after. Information on the transmission plan will be delivered on this BB. Emanuele, I0ELE Rome, Italy Il 13/05/2013 2.03, Farrell Winder ha scritto: > Dear Emanuele, > Thanks for the detailed information on the HAMTV stream. Is the > DTV-S equipment aboard the ISS now complete and ready to start > transmissions? > Is there a target date as to when 2.4 GHz transmissions might begin? > Thanks for any information. > > Farrell Winder, W8ZCF > Cincinnati, Ohio, USA > -------------------------------------------------- > From: "I0ELE" <emanuele.dandria(a)amsat.it> > Sent: Sunday, May 12, 2013 6:32 PM > To: "Greg D" <ko6th.greg(a)gmail.com> > Cc: <amsat-bb(a)amsat.org> > Subject: [amsat-bb] Re: ISS HamTV Frequencies > >> HAMTV stream will be transmitted at 1.3 MSym/s or at 2.0 MSym/s. >> Technical specs of the set-top box indicate the range of the decoded >> stream. Generally this range is from 2 to 45 MSym/s, therefore if you >> need to buy it, you should select one that can guarantee a range from >> 1 to 45 MSym/s. >> >> Emanuele I0ELE >> >> >> Il 13/05/2013 0.15, Greg D ha scritto: >>> For the digital TV challenged, what means "Any DVB-S Decoder which >>> can decode a 1.3 MSym/s TV signal"? How would I know if I have such >>> a thing, or what I would need to get if I don't. >>> >>> Greg KO6TH >>> >>> >>> I0ELE wrote: >>>> Certainly! >>>> You can find the nominal link budget on >>>> http://www.amsat.it/HAMTV_Link-budget-IARU.pdf and all the relevant >>>> information http://www.amsat.it/Amsat-Italia_HamTV_brochure.pdf. >>>> However >>>> >>>> * Recommended Antenna gain > 25 dB >>>> * RHCP >>>> * Low noise down converter i.e. Kuhne LNC 25 or LNC 25 TM NF 0.7 dB >>>> * Any DVB-S Decoder which can decode a 1.3 MSym/s TV signal >>>> >>>> 73, Emanuele, I0ELE >>>> President AMSAT Italia >>>> _______________________________________________ >>>> 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 >

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Satellite Demonstration Passes for Dayton 2013
by Keith Pugh 13 May '13

13 May '13

Here are the Satellite Demonstration Passes for Dayton 2013, 17-19 May. Times are in UTC. We will work as many of these passes as possible - weather and equipment permitting. The days are Friday, 17 May, through Sunday, 19 May. The original plain text file is attached with the original formatting. See you on the "Birds" at Dayton 2013 this weekend. 73 - Keith, W5IU AMSAT DAYTON HAMVENTION DEMOS - 2013 TZ = UTC N 39.820328 W 84.255224 ELEV. 296 M MIN ELEV. = 10 DEG GRID = EM79ut WinAos QTH: -84.3/39.8 T#: 12920 Sat.: 6 [Standard] ---------------------------------------------------------- Day Object AOS (U) LOS Period maxEl AZ ---------------------------------------------------------- 17.05.2013 AO-07 13:19 13:26 07 15 341 - 279 17.05.2013 ISS 13:50 13:53 03 12 347 - 043 17.05.2013 VO-52 14:07 14:10 03 13 319 - 267 17.05.2013 HO-68 14:19 14:31 12 32 036 - 159 17.05.2013 FO-29 14:39 14:51 12 33 032 - 160 17.05.2013 SO-50 15:00 15:08 08 70 202 - 036 17.05.2013 ISS 15:26 15:32 06 28 327 - 094 17.05.2013 HO-68 16:07 16:20 13 48 003 - 220 17.05.2013 FO-29 16:24 16:36 12 43 001 - 224 17.05.2013 SO-50 16:42 16:49 07 17 276 - 006 17.05.2013 ISS 17:03 17:09 06 34 290 - 154 17.05.2013 AO-07 20:30 20:44 14 35 121 - 357 18.05.2013 ISS 13:01 13:02 01 11 347 - 020 18.05.2013 FO-29 13:48 13:51 03 11 068 - 101 18.05.2013 SO-50 13:48 13:55 07 20 158 - 063 18.05.2013 HO-68 14:03 14:13 10 24 043 - 146 18.05.2013 ISS 14:37 14:42 05 20 332 - 079 18.05.2013 SO-50 15:28 15:36 08 45 234 - 022 18.05.2013 FO-29 15:29 15:42 13 77 015 - 191 18.05.2013 HO-68 15:50 16:03 13 62 008 - 212 18.05.2013 ISS 16:13 16:20 07 60 302 - 137 18.05.2013 FO-29 17:15 17:24 09 19 344 - 256 18.05.2013 HO-68 17:41 17:45 04 12 326 - 287 18.05.2013 AO-07 19:34 19:42 08 16 081 - 012 19.05.2013 VO-52 13:02 13:09 07 60 004 - 205 19.05.2013 AO-07 13:11 13:20 09 16 345 - 273 19.05.2013 HO-68 13:47 13:55 08 18 052 - 134 19.05.2013 ISS 13:48 13:52 04 16 342 - 066 19.05.2013 SO-50 14:15 14:23 08 53 193 - 041 19.05.2013 FO-29 14:35 14:46 11 31 034 - 157 19.05.2013 ISS 15:24 15:30 06 66 313 - 120 19.05.2013 HO-68 15:33 15:46 13 79 013 - 203 19.05.2013 SO-50 15:57 16:03 06 21 267 - 008 19.05.2013 FO-29 16:19 16:31 12 44 001 - 222

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Re: ISS HamTV Frequencies
by M5AKA 13 May '13

13 May '13

The AMSAT-UK page at http://amsat-uk.org/2013/05/12/hamtv-from-the-iss/ provides the links, they are: Facebook https://www.facebook.com/Hamtvproject More information at http://www.amsat.it/Amsat-Italia_HamTV_brochure.pdf and http://www.amsat.it/Amsat-Italia_HamTV.pdf The HamTV.pdf gives the link budget, looks like there's 7dB of coax/connector losses to overcome between the ISS transmitter and the antenna. That document indicates a 90cm dish should be sufficient. I believe that it's going up on ATV 4 which is currently slated for June 5. 73 Trevor M5AKA --- On Sun, 12/5/13, R Oler <orbitjet(a)hotmail.com> wrote: From: R Oler <orbitjet(a)hotmail.com> Subject: RE: [amsat-bb] ISS HamTV Frequencies To: "M5AKA" <m5aka(a)yahoo.co.uk> Date: Sunday, 12 May, 2013, 17:46 Trevor...I have been so busy with our family moving to our new farm and ferrying a bunch of airplanes to Bangladesh and India...that I have not read a lot on this. Do you have a link on the topic? I am about to get both a VU and SL2 license and will put both active on at least AO7 and VU 52... thanks in advance. Robert G. Oler WB5MZO > Date: Sun, 12 May 2013 17:01:46 +0100 > From: m5aka(a)yahoo.co.uk > To: amsat-bb(a)amsat.org > Subject: [amsat-bb] ISS HamTV Frequencies > > The IARU Amateur Satellite Frequency Coordination Panel have announced frequencies of 2422.0 MHz and 2437.0 MHz. > > See http://amsat-uk.org/2013/05/12/hamtv-from-the-iss/ > > ---- > 73 Trevor M5AKA > AMSAT-UK website http://amsat-uk.org/ > Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 > Twitter https://twitter.com/AMSAT_UK > ---- > > _______________________________________________ > 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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FS: Eggbeaters at Dayton
by R.T.Liddy 13 May '13

13 May '13

FOR SALE: M2 Eggbeater EB-144/RK-2M 2 Meter Eggbeater w/reflector kit M2 Eggbeater EB-432/RK-70CM 432 Eggbeater w/reflector kit These will be sold as a pair at the Dayton Hamvention this week in FleaMarket Space 1540 for less than half the catalog price! They were never mounted outside in the weather and are virtually brand new. Stop and check them out or come by just to say Hi. Maybe we worked on the Birds on one of my Satellite Expeditions. See them on my QRZ(dot)com page. 73, Bob K8BL

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ISS HamTV Frequencies
by M5AKA 12 May '13

12 May '13

The IARU Amateur Satellite Frequency Coordination Panel have announced frequencies of 2422.0 MHz and 2437.0 MHz. See http://amsat-uk.org/2013/05/12/hamtv-from-the-iss/ ---- 73 Trevor M5AKA AMSAT-UK website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK ----

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Amsat contact info
by Mike Rupprecht 12 May '13

12 May '13

fyi ------ Hi All, I didn't really know who to contact, so I emailed you all, sorry for the spam. I'd like to officially inform the Amsat and IARU communities (though you surely know this already), that we are now sure CubeBug-1 is object 13018D / 39153. In the last days NORAD has officially assigned the name "CUBEBUG 1" to object 39153. Doppler shift analysis made by many members of the amateur community (via private communications) agree with this too. For example see http://www.dk3wn.info/p/?p=33101. Finally, our own analysis, and that of the launch services broker (ISIS/ISL), based on insertion forces, masses and other physical characteristics, agrees with this assignment. So we wanted to inform the community that we now officially assume the CubeBug-1 is object 13018D/39153 and that the frequency of the radio has shifted, for some yet unknown reason. We now assume the satellite transmits (and receives) at 437438300Hz. This again is mainly based in the experience of the members of the amateur radio enthusiasts. And finally, but most important, we also wanted to thank the whole radio amateur community, so please forward them our most warm thank you. I tried to put what I feel in words a few days ago: http://1.cubebug.org/post/49490931912/we-love-the-amateur-radio-enthusiasts thank you very much all for being there, gera for the CubeBug-1 team. PS: Please, forward this email to who you think may be interested, thank you!

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ESTCUBE-1 & TURKSAT-3USAT
by Red Willoughby 12 May '13

12 May '13

Any word on when their transponders will be activated?I listened for their CW beacons this morningon high passes, but did not hear them. Red, KC4LE

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vy1rm Yukon Territory
by John Papay 12 May '13

12 May '13

VY1RM was on FO-29 at 0300utc 12May calling CO6CBF. He said he would be on the next pass. The Yukon is pretty rare so try to work him if you can. 73, John K8YSE

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