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

News from W6FOG
by John Papay 05 Nov '09

05 Nov '09

W6FOG was on the 2017z pass of AO-27 today 5 November 2009 signing CM86. No other info. 73, John K8YSE

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News from W6FOG
by David Wing 05 Nov '09

05 Nov '09

I just finished a short QSO with Neil W6FOG on VO-52. He did confirm that when he attempted to start his sailing trip he ran into very bad weather and after 16 hours of high seas and rain, he had to call the Coast Guard to come get him and tow him in as he was suffering from hypothermia. The tow broke 3 times on the way in as conditions were quite bad. At any rate he is hoping to start out again this coming weekend on Saturday or Sunday. Please keep in mind that I am only relating conversations I have with Neil on the air.I have no other contact with him and am in the dark about things just as much as everyone else sometimes. Please post comments on the -bb whenever you contact Neil on his trip.everyone is interested in the latest from him as he makes his way from San Francisco (CM87) through the Panama Canal to the Caribbean. 73 David K6CDW

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YouTube on satellite power management
by Alan P. Biddle 05 Nov '09

05 Nov '09

There is a very interesting video on management of a satellite so as not to waste energy transmitting "to whales and penguins." Not new, but a good discussion of the concept and implementation. http://www.southgatearc.org/news/november2009/satellite_power_saving.htm Alan WA4SCA

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ISS frequencies
by Tim Goodrich 05 Nov '09

05 Nov '09

What is the best way to determine what frequencies are operational for ISS? I have a list of them all, but I noticed on issfanclub.com that it says only one is operational at a time. By the way, this site is supposed to answer my question, but from what I can tell, it doesn't appear to be updated much. Also, I listened for activity on the 1945 PST pass, but didn't hear anything- not even the beacon. Tim KI6VBY

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video: satellite power-saving through on-board tracking
by Bruce Robertson 05 Nov '09

05 Nov '09

In a further exploration of the use of the Plan 13 algorithm in Atmel (or similar) micro-controllers, I've posted a youtube video and related text that suggests how an amateur satellite could use such a device on board to change its mode based on its location over the earth. http://sites.google.com/site/qrptracker/applications/modeswitcher/ The video includes a sped-up night-long tracking session, some current consumption testing on the bench and a calculation of the power budget, which show that even for birds transmitting in the tens of milliwatts, this approach can provide about a 14% improvement in power budget. 73, Bruce http://ve9qrp.blogspot.com/

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Re: New AO-51 Whole Orbit Data decoder released by DK3WN
by Mark L. Hammond 04 Nov '09

04 Nov '09

Hi Luc, TLMEcho is the program for LIVE decoding of AO-51 telemetry packets during a pass. Some telemetry channels are sent via 9600 baud packet at a regular interval, usually 10 seconds, and TLMEcho can decode these (using a 9600 baud modem) LIVE as they are coming down. The new WOD decoder is different--it is used to decode satellite telemetry data collected (more channels usually) and stored on the satellite during a whole orbit (usually set for 24 hours). Once the WOD file is finished, it appears on the PBBS and can be downloaded via WISP. The downloaded WOD file can then be decoded by DK3WN's new program after it has been downloaded from the satellite as a big file (about 180k). I hope that helps clear things up :) 73, Mark N8MH __________________ Message: 7 Date: Thu, 22 Oct 2009 12:56:50 -0400 From: Luc Leblanc <lucleblanc6(a)videotron.ca> Subject: [amsat-bb] Re: New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb(a)amsat.org Message-ID: <4AE05692.19949.5C3023B(a)lucleblanc6.videotron.ca> Content-Type: text/plain; charset=ISO-8859-1 On 22 Oct 2009 at 11:39, Mark L. Hammond wrote: Date sent: Thu, 22 Oct 2009 11:39:08 -0400 From: "Mark L. Hammond" <marklhammond(a)gmail.com> Subject: [amsat-bb] New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb(a)amsat.org > Thanks to our resident telemery guru Mike Rupprecht DK3WN a new AO-51 > whole orbit data (WOD) telemetry decoder has been released! ?The file > with decoder and coefficients file can be downloaded from here: > > http://www.dk3wn.info/files/ao51wod.zip > > The AO-51 telemetry archive is on the AMSAT FTP server. ?DK3WN's new > decoder is for processing "raw" WOD telemetry files. ?For example, the > WOD data collected for October 2009 is here: > > ftp://ftp.amsat.org/pub/amsat/telemetry/ao51/2009WOD/Oct2009/raw1009/ > > > The decoder generates a .CSV (comma separated) file that can be opened > in Excel, etc. ?A nice feature is that the telemetry program acutally > graphs the data, too! > > THANKS, Mike DK3WN! > > 73, > > -- > Mark L. Hammond [N8MH] > > _______________________________________________ > 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 > Hi Mark Is it a new program or a new update for "tlmecho"? I guess it's a new one but just to be safe. Thank's Thank's "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE -- Mark L. Hammond [N8MH]

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Antenna Circularity Switch Relays
by Roy 04 Nov '09

04 Nov '09

Re antenna circularity switch relays. I don't know who asked the question but KLM used Guardian 1365 series relays. They are small in a plastic housing but they are regular DPDT relays. They are used in both the 70cm and 2M versions of their antennas. -- Roy -- W0SL

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JA QSO?? AO-7
by Bob- W7LRD 04 Nov '09

04 Nov '09

Any JA's who operate AO-7 mode A. Perhaps we can "stretch" the footprint just a bit. From my QTH CN87, I can "see" northern JA. Email direct. 73 Bob W7LRD CN87wk Seattle

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XE3DX EK15,25,26 Operation Wrapup
by John Papay 04 Nov '09

04 Nov '09

Hi all, I am back home, I want to thank all the support John, K8YSE, always send messages from my activities on the grids EK15, EK25 and EK26, thanks John, and all of you for always being attentive to my call. Wanted to schedule everything very well, but my trip was with my family, I had to hide the radio and antenna to avoid being caught, was a vacation! for my radio is my vacation, I made a deal with my wife on my satellite activities. I hope in a next output can schedule everything and make known, Talves soon I activate these new grid or otherwise. To find out if my records are in the log can be viewed online on my webpage at www.qsl.net/xe3dx/ and know the time of contact. Thanks again and hope to hear soon, these stations were heard: EK26 XE2AT, K8YSE, WA4NVM, XE1AO, K4DLG, N4ZQ, N3TL, N5ZNL, WA5KBH, ???SZH, N2UZQ, AA5CK, XE1TD, XE1GRR, AA5PK, XE1FXF, XE3CIA, N9EME, and XE1ROZ???. EK25 HK6IOP,KN4OK, WA4NVM, K8YSE, N3TL, AA5PK, N5AFV, XE3CIA, XE1AO, XE1MEX,and XE1AY. EK15 N3TL, K4DLG, K0OU, XE2AT, N8MS, K8YSE, AA5CK, XE1AO, XE3CIA, AA5PK, W4AS, K7WIN, N5ZNL and K5WSA. XE3DX David Maciel

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Home Back
by xe3dx 04 Nov '09

04 Nov '09

hi all, I am back home, I want to thank all the support John, K8YSE, always send messages from my activities on the grids EK15, EK25 and EK26, thanks John, and all of you for always being attentive to my call. wanted to schedule everything very well, but my trip was with my family, I had to hide the radio and antenna to avoid being caught, was a vacation! for my radio is my vacation, I made a deal with my wife on my satellite activities. I hope in a next output can schedule everything and make known, Talves soon I activate these new grid or otherwise. To find out if my records are in the log can be viewed online on my webpage at www.qsl.net/xe3dx/ and know the time of contact. Thanks again and hope to hear soon, these stations were heard: EK26 XE2AT, K8YSE, WA4NVM, XE1AO, K4DLG, N4ZQ, N3TL, N5ZNL, WA5KBH, ???SZH, N2UZQ, AA5CK, XE1TD, XE1GRR, AA5PK, XE1FXF, XE3CIA, N9EME, and XE1ROZ???. EK25 HK6IOP,KN4OK, WA4NVM, K8YSE, N3TL, AA5PK, N5AFV, XE3CIA, XE1AO, XE1MEX,and XE1AY. EK15 N3TL, K4DLG, K0OU, XE2AT, N8MS, K8YSE, AA5CK, XE1AO, XE3CIA, AA5PK, W4AS, K7WIN, N5ZNL and K5WSA. XE3DX David Maciel xe3dx(a)amsat.org www.qsl.net/xe3dx/ Amateur Ham Radio

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