AMSAT-BB April 2010

198 participants
291 discussions

EMCOMM West
by Mark Spencer 28 Apr '10

28 Apr '10

There will be a special event station set up and operating in Reno, NV this weekend for EMCOMM West. The station W7ECW will be on the air for as many satellites as can be accessed. If you need DM09 or just want to say HI to the audience of the demonstration, please give us a shout. Mark Spencer, WA8SME Education and Technology Program Coordinator ARRL, the national association for Amateur RadioT mspencer(a)arrl.org www.arrl.org/education-technology-program www.arrl.org/teachers-institute-on-wireless-technology 530-495-9150

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Japanese Launch May 18
by Trevor . 28 Apr '10

28 Apr '10

Story about Ikaros which launches May 18 along with the Amateur Radio satellites UNITEC-1, Negai and WASEDA-SAT2 http://www.space-travel.com/reports/Japan_to_launch_space_yacht_propelled_b… 73 Trevor M5AKA Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Upload Using Form At: http://www.southgatearc.org/news/your_news_1.htm ----

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[Fwd: 2nd Birthday of COMPASS-1]
by Compass1Cubesat 28 Apr '10

28 Apr '10

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Galaxis Space Scanner ACU
by Joe Leikhim 28 Apr '10

28 Apr '10

I have found a number of the model Galaxis Space Scanner ACU Labeled as being made by FutureTrak Intl, and having Lockheed-Martin manufacturer labels. These were apparently made for tracking DBS satellites from yachts and RV's. I saw a post a while back about a website on using these for Ham Sats. Does such information still exist? -- Joe Leikhim Leikhim and Associates Communications Consultants Oviedo, Florida www.Leikhim.com JLeikhim(a)Leikhim.com 407-982-0446

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AO-51 mode L/U
by Luc Leblanc 27 Apr '10

27 Apr '10

Since the new L/U schedule very few operators has been heard on this mode. The first day N8MH give his call sign and about 4 or 5 users are operating when i have the sat in view. It seems the uplink is much more critical than the past L band uplink sessions. it look like the receiver bandwidth was reduce making frequency adjustment more critical. I know the audio level is reduce to save energy but it could explain why many seems to find it is harder to get on the right uplink frequency? "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE

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AO-51 L band requirements
by Bob- W7LRD 27 Apr '10

27 Apr '10

Reading the AO-51 book by Gould where he discuses the L band requirements. For occasional contact 150 W EIRP is needed. For superior performance 1 Kw EIRP needed. Assuming I start out with 10W to a 16 turn helix 40 feet away. Guesstimating- 5-8 W at the antenna, helix gain 8-12db. Guestimated EIRP about 40W (worst case). Am I figuring this correct? If so then AO-51 is performing better than what the book says. I am trying to "fine tune" what I have. Thanks 73 Bob W7LRD Seattle

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Small Satellites Symposium
by Trevor . 27 Apr '10

27 Apr '10

The Small Satellites Systems and Services (4S) Symposium takes place in Madeira from May 31 to June 4, 2010 and this year features a CubeSat Workshop. See http://www.southgatearc.org/news/april2010/small_satellite_symposium.htm 73 Trevor M5AKA Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Upload Using Form At: http://www.southgatearc.org/news/your_news_1.htm ----

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Request for AMSAT Booth volunteers during Dayton
by Gould Smith 26 Apr '10

26 Apr '10

Greetings, I am looking for volunteers to help out in the AMSAT booth during the 2010 Dayton Hamvention. I have a number of volunteers from the Area Coordinator pool, but could use some additonal help in manning the 6 booth spaces. Please let me know by Wed evening 28 April if you can help out. It makes scheduling easier if you will volunteer for two hour segments. Let me know what days (Friday, Saturday and Sunday) and what times (in multi-hour blocks) that you can volunteer and how many hours you wish to work each day. i.e. Friday between 1-5 for two hours and Saturday 9-3 for two, 2 hour blocks with at least an hour between the blocks. Looking forward to visiting with you at Dayton. 73, Gould, WA4SXM

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ISS APRS
by n4csitwo＠bellsouth.net 26 Apr '10

26 Apr '10

I heard ISS APRS (145.825 MHz) during the 01:21 UTC pass and now again on the 03:00 UTC pass. Dave, AA4KN

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AO-51 L mode observations
by Bob- W7LRD 26 Apr '10

26 Apr '10

This last pass up the west coast. Very good strong downlink, running a 910 @ 10W to a 16 turn RHCP helix through 40 feet of LMR400. Even good copy running 2 watts! Rx 40 el cp yagi. Early in the pass RHCP was better for rx, later and near LOS LHCP was better. Why? Only station heard was VE7CNA and he was very weak, aside from that I could only talk to myself. I know we have some L banders on the "left" coast and up there in KL7. It's lonely. 73 Bob W7LRD

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AMSAT-BB April 2010