May 2007 - AMSAT-BB - mailman.amsat.org

Indoor tracking at Dayton!
by Robert Bruninga 17 May '07

17 May '07

Use your D7 to find each other at Dayton, anytime, anywhere, including indoor. No GPS dongle needed. The D7 and APRS is not just GPS! The only people who need GPS are those that are lost or moving. Use your D7. Put something useful in it. It can hold three posits as is, and it only takes a tweak of 2 digits to put yourself anywhere within the HAMvention complex or Dayton area... Just take a note card with your favorite locations in and around Dayton where you will be hanging out and manually enter your posit when you sit down for a while. Your favorite bar, restaurant, motel, meeting, etc. Here are some examples on the grounds of the Hamvention: Basic HARA posit is 3949.yyN and 08415.xxW Then tweak the X and Y digits whenever you hang out in one of these rooms. This list proceeds diagonally from the front Traffic light to the extreme NW corner of the Hamvention fleamarket/parking area. In fact, cut this out and tape on the back of your HT: 3949.yyN/08415.xxW yy/xx Location ----- ---------- 19,24 Traffic light 23,28 East Hall 23,33 Ballarena 26,33 Food court 26,37 Forum rooms 27,32 North Hall 29,38 Arena 36,62 Extreme NW corner of the Flea Market/parking lot area 3946.87N/8406.60W TAPR/AMSAT meeting at AF museum Anywhere in between is trival to estimate using the above figures assuming you have even a basic sense of direction.. Each hundredths digit is 60 feet. Trying to find someone? Just enter your estimated posit above, and then your D7 will show you the distance and range to them (if they are updating). Don't just leave some stupid old posit in your D7 that has nothing to do with reality. If nothing else, enter 3949.2-N and 08415.3-W and set position ambiguity to 1 digit, and this will show the world that you are basically inside the building complex. See ya there. On the road enroute Thursday afternoon. Bob, WB4APR

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FCal telemetry May 17. 2007
by Mike Rupprecht 17 May '07

17 May '07

20070517072858,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BA0F001CF280005FFF8000EFBE 00047FD30FFFEFD180190FDB8 20070517072905,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000900EC00E100DB00A900F300DE000F N 0000001E 20070517072943,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BA3C0021F10000CFFE00010FBF 0004CFD98FFFEFCE800C5FE48 20070517072949,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000F00EB00E100DC00A300EE00DD0004 N 0000001E 20070517073029,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BA690024FC30018FFB00016FC2 80053FDF0FFFFFCE8001FFEA0 20070517073034,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000400E700E000DB00A600F000DE000A N 0000001E 20070517073113,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BA960023FC0002DFF680025FC9 80053FE60FFFFFCD00013FEF8 20070517073118,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000A00F000EB00DB00AA00FC00DD000A N 0000001E 20070517073156,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BAC30016FC80043FF680041FCD 80050FEB8FFFFFCB00009FF20 20070517073203,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000A00F200E100DB00A500F800DD0009 N 0000001E 20070517073241,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BAF0000CFC400047FF70012AFD 280046FF000000FC88000EFF40 20070517073248,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000900F000E300DC00A300FD00DE000D N 0000001E 20070517073327,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BB1D0005FC500040FF80016BFD 880040FF500001FC90001DFF20 20070517073334,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000D00F400ED00DB00A300F600DE000A N 0000001E 20070517073411,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BB4A008FC50046FF7800D0FDF0 0038FF780002FC600027FEF8 20070517073418,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000A00E900EA00DB00A500F900DF000C N 0000001E 20070517073456,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BB770015F68003FFF98003BFE4 00030FFC00004FC68002AFEF8 20070517073503,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000C00E500E100DB00A500F100DE0009 N 0000001E 20070517073541,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BBA4001DFCB0035FFA0001FFE6 80021FFE80006FC50003EFEE0 20070517073548,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000900F200E000DD00AC00FB00DD000A N 0000001E 20070517073625,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:00C1BBD1029CE8001BFF800018FE88 001B00280007FC40002DFEE0 20070517073633,KD4HBO>TELEM,TELEM,qAo,DK3WN-1:Analog 000A00EC00E100DA00AB00F000DD0007 N 0000001E 00C1BAF0000CFC400047FF70012AFD280046FF000000FC88000EFF40 [56 byte] TimeStamp : 146d 22:45:04 Sun Sensor 1 (+Z) : 12 Sun Sensor 2 (+X) : 71 Sun Sensor 3 (+Y) : 298 Sun Sensor 4 (-X) : 70 Sun Sensor 5 (-Y) : 0 Sun Sensor 6 (-Z) : 14 Temp Sensor 1 : -3,75 °C Temp Sensor 2 : -0,563 °C Temp Sensor 3 : -2,844 °C Temp Sensor 4 : -1,0 °C Temp Sensor 5 : -3,469 °C Temp Sensor 6 : -0,75 °C Analog 000900F000E300DC00A300FD00DE000D N 0000001E Reg Power 5V : 4,994 V Unreg Power 5V : 7,814 V Battery Input : 7,656 V Deployer Neg Volt : 7,57 V Deployer Pos Volt : 6,874 V Sensor Neg Volt : 7,973 V Sensor Pos Volt : 7,595 V Current : 5,043 mA Telemetry Intervall : 30 73, Mike DK3WN

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Congratulations & thanks!
by Jim Sanford 16 May '07

16 May '07

Gentlemen: I have just finished perusing the contents of the boxes that FEDEX dropped off today. All I can say is, WOW! The workmanship and quality that you and your teams delivered is awsome. I will be proud to stand behind the table at Dayton and show our members what you have done. Congratulations to you and your teams. Thanks & very 73, jim wb4gcs(a)amsat.org

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Office Closed
by MARTHA SARAGOVITZ 16 May '07

16 May '07

The AMSAT office is closed Thursday, May 17th and Friday, May 18th. See you in Dayton! 73, Martha - AMSAT Manager

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Re: Mini-DXpedition to Santa Catalina Island (DM03/IOTA NA-066)
by John Mock KD6PAG 16 May '07

16 May '07

I returned a couple of days before the fire started and as of today, 30+ cards have been mailed. Aside from cards to Mexico, any that have not gone out yet have at least been sent e-mail. Aside from the usual problems with weekend AO-51 passes (especially in the morning), things went pretty smoothly, aside from a couple of minor equipment glitches. The Pacific/Mountain zone folks seemed to be good about not crowding the transcontinental passes. Pacific passes were lighter than i would like but still productive, and alas, i missed hearing several West Coast stations that i would have liked to have worked. Local geography made Hawaii passes impractical but at least i worked one Alaska station. So after a week or so, if you haven't gotten a card or an e-mail from me, please send me an e-mail with the particulars of the contact and i will get a card out to you (assuming i have you in my log and/or voice recordings), and as noted before, SASE not necessary. 73's and good luck! -- KD6PAG (Networking Old-Timer, Satellite QRPer) P.S. Next unusual grid should be a couple of AO-27 passes from CM86 (Santa Cruz) on Saturday afternoon, 2 June 2007. Possibly also CM79 in late June, weather and schedules permitting. P.P.S Reminder: US postal rates have gone up again; they are now $0.69 for Canada and Mexico, $0.41 domestic. If anyone who sends SASE wants to trade some Canadian or Mexican stamps for US stamps, please let me know. (If i get more requests than i can use, perhaps i'll facilitate set up some kind of stamp exchange.)

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OSCAR-11 Report
by Clive Wallis 16 May '07

16 May '07

OSCAR-11 REPORT 16 May 2007 RECEPTION REPORTS REQUESTED! OSCAR-11 might switch ON around 18/19 May and possibly 8/9 June. However, due to solar eclipses the satellite is likely to switch OFF, almost immediately, probably after less that one orbit. This brief period of activity could occur when the satellite is over any part of the world. Due to the condition of the satellite, there is no guarantee that these predictions are reliable, during the eclipse season. Any reception reports would be grately appreciated. Please send to the the address below or post to amsat-bb. If you are able to record the satellite as a WAV file, please do so, but let me know what you have, before sending it! If you need to hear what the satellite sounds like, please visit my website www.users.zetnet.co.uk/clivew/ The satellite transmits on 145.826 MHz. set receiver to NBFM. --------- During the period 17 April to 15 May 2007, the satellite's 145.826 MHz. beacon was heard from 22 to 28 April. The beacon switched ON as expected. This short period was of special interest since the solar eclipses started on 21 April and steadily increased each day, reaching a duration of 12.6 minutes when the beacon switched OFF. Thus it was an rare oportunity to study the effect of solar eclipses on the satellite. Good signals were heard on most passes, although they became weaker towards the end of the ON period. Good copy of the telemetry was obtained. The on-board clock has continued to be of interest. At the start of this ON period the clock was 38.21438 days slow, showing a loss of about 3 seconds since the previous ON period. For the next four days the clock remained stable, however by 07:14 UTC 28 April the clock had lost a further 220 minutes. On the next two passes the clock lost 20.3 and 20.6 minutes respectively, ie. almost twice the duration of the eclipses. When last heard the total clock error was 38.39593 days slow. Peter, ZL3TC reported hearing the satellite switch ON, after coming out of eclipse at 08:14 on 28 April. These observations suggest that the satellite's electronics may be suffering from low power supplies, before the watchgog timer cycle finally resets. If the satellite's watchdog timer continues to operate normally, the beacon should switch ON around 19 May 2007. However, the duration of the solar eclipses at that time is 23.4 minutes. This could cause the beacon to switch OFF. after a short time, probably less than one orbit. This short transmission could occur any where over the world, and could be repeated at 20.7 day intervals, until August when longer transmissions are likely. expected to start on 20 April and will continue until 20 August. If the satellite performs as it did last year, it is unlikely to be heard, for any length of time, during the eclipse season. Maximum eclipse duration of 23 minutes occurs on 14 June and it decreases to 12 minutes by 10 August. At that level, the satellite might start transmitting. I am indebted to Ian ZL1AOX, Peter ZL3TC, David G8OQW, Jeff KB2M, Edward BX1AD, Sil ZL2CIA, Gene Dave G1OCN, John K8YSE and Grant VK4JAZ for their reports. Many thanks. The current status of the satellite, is that all the analogue telemetry channels, 0 to 59 are zero, ie they have failed. The status channels 60 to 67 are still working. The real time clock is showing a large accumulated error, although over short periods timekeeping is accurate to a few seconds per month. The day of the month has a bit stuck at 'one' so the day of the month is showing an error of +40 days. The time display has switched into 12 hour mode, with the date changing at around 09 hours UTC. Unfortunately, there is no AM/PM indicator, since the time display format was designed for 24 hour mode. The spacecraft computer and active attitude control system have switched OFF, ie. the satellite' attitude is controlled only by the passive gravity boom gradient, and the satellite is free to spin at any speed. When telemetry was last received it showed that one of the solar arrays had failed, and there was a large unexplained current drain on the main 14 volt bus. After 22 years in orbit the battery has undergone around 100,000 partial charge/discharge cycles, and observations suggest that it cannot power the satellite during eclipses, or sometimes during periods of poor solar attitude. The watchdog timer now operates on a 20 day cycle. The ON/OFF times have tended to be very consistent. The average of many observations show this to be 20.7 days, ie. 10.3 days ON followed by 10.4 days OFF. However, poor solar attitude may result may result in a low 14 volt line supply, which may cause the beacon to switch OFF prematurely, and reset the watchdog timer cycle. When this occurs, the beacon is OFF for 20.7 days. The Beacon frequencies are - VHF 145.826 MHz. AFSK FM ASCII Telemetry UHF 435.025 MHz. OFF S-band 2401.5 MHz. OFF Listeners to OSCAR-11 may be interested in visiting my website. If you need to know what OSCAR-11 should sound like, there is a short audio clip for you to hear. The website contains an archive of news & telemetry data. It also contains details about using a soundcard or hardware demodulators for data capture. There is software for capturing data, and decoding ASCII telemetry. The URL is www.users.zetnet.co.uk/clivew/ If you place this bulletin on a terrestrial packet network, please use the bulletin identifier $BID:U2RPT133.CWV, to prevent duplication. 73 Clive G3CWV xxxxx(a)amsat.org (please replace xxxxx by g3cwv)

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Demos from Dayton this Week
by Keith D. Pugh 16 May '07

16 May '07

Satellite Demonstrations from the Dayton Hamvention are planned for the following satellite passes: WinAos QTH: -84.3/39.8 T#: 10729 Sat.: 6 [Standard] ---------------------------------------------------------- Day Object AOS (L) LOS Period maxEl AZ ---------------------------------------------------------- 18.05.2007 SO-50 08:12 08:25 13 60 324 - 159 18.05.2007 AO-07 09:22 09:43 21 47 022 - 179 18.05.2007 AO-51 10:02 10:16 14 73 014 - 190 18.05.2007 AO-07 11:15 11:35 20 40 010 - 227 18.05.2007 AO-51 11:41 11:53 12 14 352 - 241 18.05.2007 VO-52 12:19 12:31 12 70 010 - 197 WinAos QTH: -84.3/39.8 T#: 10730 Sat.: 6 [Standard] ---------------------------------------------------------- Day Object AOS (L) LOS Period maxEl AZ ---------------------------------------------------------- 19.05.2007 SO-50 08:42 08:54 12 22 312 - 181 19.05.2007 AO-51 09:23 09:36 13 31 024 - 169 19.05.2007 AO-07 10:15 10:37 22 85 016 - 202 19.05.2007 AO-51 11:01 11:15 14 31 002 - 221 19.05.2007 AO-07 12:09 12:27 18 20 005 - 250 19.05.2007 VO-52 12:37 12:50 13 46 006 - 207 19.05.2007 AO-27 16:20 16:35 15 64 156 - 350 WinAos QTH: -84.3/39.8 T#: 10731 Sat.: 6 [Standard] ---------------------------------------------------------- Day Object AOS (L) LOS Period maxEl AZ ---------------------------------------------------------- 20.05.2007 AO-51 08:44 08:55 11 13 037 - 144 20.05.2007 AO-07 09:15 09:36 21 43 023 - 177 20.05.2007 AO-51 10:22 10:37 15 71 010 - 200 20.05.2007 AO-07 11:08 11:29 21 43 011 - 223 20.05.2007 VO-52 11:20 11:32 12 23 027 - 165 Times shown are EDT. The primary callsign will be W5IU. Look for us in accordance with this schedule. 73 - Keith, W5IU

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LIbertad I Orbital Elements
by Paul Nuñez 15 May '07

15 May '07

Hi, My name is Paul Nuñez, I'm a member of the team that developed Libertadd I (Colombia). I was wondering if you could send us all the orbital elements you have on our satellite. We really appreciate your help, Paul

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FS: tr-9130 all mode
by willmarbrowns＠peoplepc.com 15 May '07

15 May '07

Selling 2 mtr all mode xcvr. operates as it should. cosmetics a 7 due to mobile bracket use. comes with mobile bracket, dtmf mic, power cord and manual. $165 shipped conus. 73 es tks... Bruce ke0lx amsat 30873 willmarbrowns(a)charter.net

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CP-4 telemetry May 15, 2007
by Mike Rupprecht 15 May '07

15 May '07

15.05.2007, 19:24:16 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 24 [Payload Bytes: 7] from N6CP to N6CP: 1 > 04 43 4F 4D 4D 20 42 .COMM B ________________________________________________________________________________ 15.05.2007, 19:24:17 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 116 [Payload Bytes: 99] from N6CP to N6CP: 1 > 01 0B 50 0B 0E 06 B5 02 06 03 52 A9 D4 E5 C0 CA 37 2D 02 85 21 > B6 49 43 C2 AF 01 00 09 A6 23 76 82 BE B4 03 01 03 8F 49 F7 41 > EC C5 CE 17 13 03 74 9E E8 E4 C1 00 04 B8 A5 B8 B9 C4 11 12 61 > 0B 0A 03 02 77 89 89 BA BA 8B C7 6A F3 FD FF DE E8 8B C7 6B 81 > F4 FD FF 2D EB 03 01 00 00 66 26 08 5C 01 27 2A 2B 5C FC ..P...µ...R©ÔåÀÊ7-.…¶ICÂ¯...¦#v‚¾´...I÷ìÅÎ...tžèäÁ..¸¥¸¹Ä......w‰‰ºº‹ÇjóýÿÞè‹Çkôýÿ-ë....f&.\.'*+\ü ________________________________________________________________________________ 15.05.2007, 19:29:16 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 24 [Payload Bytes: 7] from N6CP to N6CP: 1 > 04 43 4F 4D 4D 20 41 .COMM A ________________________________________________________________________________ 15.05.2007, 19:29:17 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 116 [Payload Bytes: 99] from N6CP to N6CP: 1 > 01 0D 50 0B 12 05 C6 02 07 03 4E A2 59 65 C0 A1 03 00 02 7D 21 > BA 5F 5E C2 C2 4B 50 09 AD 1B 74 78 BE D4 03 03 03 8D 4E D3 41 > C1 C4 9B 00 00 03 6F 9D A8 AB C0 00 05 B8 93 B8 B8 AE 10 0E 61 > 0D 03 0A 01 77 88 85 BA BA 83 C7 6C F3 35 00 DD E8 8B C7 6B 81 > F4 FF FF 2C EB 03 01 00 00 26 26 08 6B 01 29 2A 2A 0B A4 ..P...Æ...N¢YeÀ¡...}º_^ÂÂKP..tx¾Ô...NÓÁÄ›...o¨«À..¸“¸¸®......wˆ…ººƒÇló5.Ýè‹Çkôÿÿ,ë....&&.k.)**.¤ ________________________________________________________________________________ 15.05.2007, 20:59:14 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 24 [Payload Bytes: 7] from N6CP to N6CP: 1 > 04 43 4F 4D 4D 20 41 .COMM A ________________________________________________________________________________ 15.05.2007, 20:59:15 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 116 [Payload Bytes: 99] from N6CP to N6CP: 1 > 01 3A 50 0C 2F 2C 91 02 07 04 62 A0 E0 F1 C0 92 03 00 03 80 21 > BD CF CB C1 8E 01 00 09 A8 32 B8 C6 BD 93 03 02 03 8D 50 E8 41 > DD C4 90 00 00 03 74 8F F7 F9 C0 00 05 B8 A0 B8 B8 A6 11 0F 61 > 0C 04 0A 01 72 85 85 B9 BA 83 C7 68 F5 A0 FF 47 E9 83 C7 68 81 > F6 CC FF AE EA 03 01 00 00 26 26 08 6B 01 27 2B 2C 5C DA .:P./,‘...b àñÀ’...€½ÏËÁŽ...¨2¸Æ½“...PèÝÄ...t÷ùÀ..¸ ¸¸¦......r……¹ºƒÇhõ ÿGéƒÇhöÌÿ®ê....&&.k.'+,\Ú ________________________________________________________________________________ 15.05.2007, 21:04:14 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 24 [Payload Bytes: 7] from N6CP to N6CP: 1 > 04 43 4F 4D 4D 20 42 .COMM B ________________________________________________________________________________ 15.05.2007, 21:04:15 UTC ctrl: 3 {UI} PID: F0 {No L3} Frame Bytes: 116 [Payload Bytes: 99] from N6CP to N6CP: 1 > 01 3D 50 0C 35 2B B1 02 05 03 57 AF CB DC C0 C9 37 2E 02 83 21 > BC 4A 45 C2 AD 01 00 08 A2 29 69 75 BE B1 03 01 03 8D 42 FC 41 > F1 C5 D0 02 00 03 6C 96 F6 F4 C0 00 05 B9 AA B8 B9 BF 10 10 61 > 0D 0A 04 01 7C 8F 8E BA BA 8B C7 6A F2 FF FF 42 E9 83 C7 6B 81 > F3 FE FF B2 EA 03 01 00 00 66 26 08 62 01 27 29 2A 5D 2D .=P.5+±...W¯ËÜÀÉ7..ƒ¼JEÂ...¢)iu¾±...BüñÅÐ...l–öôÀ..¹ª¸¹¿......|Žºº‹ÇjòÿÿBéƒÇkóþÿ²ê....f&.b.')*]- ________________________________________________________________________________ The internal clock is drifting abt. 2 seconds per pass ( 2 sec / 99 minutes). 73, Mike DK3WN

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