January 2011 - AMSAT-BB - mailman.amsat.org

Re: FO-29 (USA Evening Passes)
by David Palmer 24 Jan '11

24 Jan '11

I live on the USA west coast, and often work the evening passes (0200z - 0600z) of the FM and Linear sats. Sometimes it's just me on there, sometimes there are others, but it's definitely a lot quieter than the daytime passes! 73 de Dave KB5WIA / CM88 2xFT817ND > I was wondering if anyone has been/going to be making any latenight > contacts on the FO-29?

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Mobile Phone as Part of Satellite
by David Barber 24 Jan '11

24 Jan '11

May be on interest. http://www.bbc.co.uk/news/science-environment-12253228 ********

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VUCC QSO costs
by Jeff Yanko 24 Jan '11

24 Jan '11

Hi all, Not sure is this was brought out into the open but I think it clarifies just about everything we've been questioning. http://www.arrl.org/files/file/Awards/VUCCRULE1a.pdf 73, Jeff WB3JFS

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Re: FO-29
by Bob- W7LRD 24 Jan '11

24 Jan '11

Kevin I worked "myself" the whole pass. The satellite covered the western half of the country. 73 Bob W7LRD ----- Original Message ----- From: "Kevin Deane" <summit496(a)live.com> To: amsat-bb(a)amsat.org Sent: Sunday, January 23, 2011 9:24:32 PM Subject: [amsat-bb] FO-29 Hello, I was wondering if anyone has been/going to be making any latenight contacts on the FO-29? Rookie Kevin KF7MYK _______________________________________________ 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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FO-29
by Kevin Deane 24 Jan '11

24 Jan '11

Hello, I was wondering if anyone has been/going to be making any latenight contacts on the FO-29? Rookie Kevin KF7MYK

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Tracking with parallel to USB converter
by Wayne Estes 24 Jan '11

24 Jan '11

I want to use my HalloRotor parallel-port rotor interface with a new PC that doesn't have a parallel port. Has anybody had success using a parallel-to-USB converter with a parallel port rotor interface? In the past I used a parallel-to-USB converter and Windows device manager decided that it was a "USB printer", not LPT2. Is there a model of parallel-to-USB converter that Windows recognizes as a LPTx ? Wayne Estes W9AE Oakland, Oregon, USA, CN83ik

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Echoes of Apollo Call for Student Investigators & Adult Engineering Mentors
by JoAnne Maenpaa 23 Jan '11

23 Jan '11

I received this request too late to include in this week's ANS-023 bulletins so I'm forwarding the message to the amsat-bb to help get the word out. Please send your replies directly to Pat: apolloeme(a)gmail.com -- 73 de JoAnne K9JKM k9jkm(a)amsat.org Editor, AMSAT News Service Echoes of Apollo Call for Student Investigators & Adult Engineering Mentors Pat Barthelow, AA6EG of the Echoes of Apollo Project (the folks who brought us the 70cm Arecibo EME activity) is working with kids on the Google Science Fair. The students and adult mentors have devised a simple experiment to measure the distance to the moon using Moon Bounce. Pat has several EME stations committed and is looking for more tech- nical support. He is also looking for additional young Co-Primary Investigators (Age 13-18) to participate. Time is of the essence. Reply directly to: apolloeme(a)gmail.com Pat says the students will develop the experiment, lead, analyze. Adults are needed to nurture, guide, mentor with these goals in mind: + Key a CW transmission or alternatively, send an audio impulse via microphone to EME TX. + Starting the time clock on the impulse transmission whether Audio "Clack" or CW key. + Recording for Science Fair presentation, using Multimedia video/audio eqiupment in the Moon bounce Station. + Stopping the clock when the audio/RF does RT to moon (~2.5 Seconds) and returns, and is demodulated by Moon bounce RX and presented at Audio speaker terminals. + Pre-measure station delays in TX and RX to develop a constant for internal equipment delays. + Measuring the EME interval as closely as possible, with simple equipment, say, to millseconds. Probably take the Multimedia video/ audio to a Video editor, to measure delay, digitally. + Compare distance to the moon in the NASA, or US Naval Observatory databases for their actual distance to moon, at the moment of the experiment. + Student analyzes for errors, error sources, discusses return signal distortion, due to doppler, Libration, pulse stretching, due to spherical moon, etc. + Student suggests follow up experiment, to minimize measurement errors, or assuming more sophisticated equipment became available. QUESTION: For an analog RX to audio output, what would be the best way be to measure the internal propagation delay in an [Analog, Digi- tal] receiver, from the time of arrival of the RF at the Antenna con- nector to demodulated output [Analog, Digital] at the speaker, or computer screen. For analog receivers, is the internal RX propagation delay, in order of: microseconds? Milliseconds? For Digital receivers? Best Regards, Pat Barthelow, Echoes of Apollo apolloeme(a)gmail.com

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Delfi-C3 1000 days in orbit
by wouter weggelaar 23 Jan '11

23 Jan '11

Hi All, Today is the 1000th day in orbit for Delfi-C3. The downlink is still ok and telemetry shows no big degradations. This means Delfi-C3 is still in good health. Apart from the problems with the transponder and some occasional resets and lockups, scientific data is still being received. Also, this data is still forwarded by radio amateurs to our server. Once again our big thanks for receiving Delfi-C3 and your continued support of the project. 73 On behalf of the Delfi-C3 team Wouter Weggelaar PA3WEG

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Fw: UPDATE: DELFI C3 Close Approach
by Peter Portanova 23 Jan '11

23 Jan '11

For your observation and information.. 73- Pete WB2OQQ www.massapequanyweather.com http://www.qrz.com/db/WB2OQQ? > > The United States Joint Space Operations Center (JSpOC) has updated a > predicted conjunction between DELFI C3 (SCC# 32789) and SCC# 28811. > > Primary Object: DELFI C3 (SCC# 32789) > Secondary Object: SCC# 28811 > Time of Closest Approach: 24 JAN 2011 13:39 UTC > > Overall miss distance: 339 meters > Radial (dU) miss distance: -117 meters > In-Track (dV) miss distance: 309 meters > Cross-track (dW) miss distance: 82 meters > > Primary Radial Error (U): 10 meters > Primary In-track Error (V): 98 meters > Primary Cross-track Error (W): 7 meters > > Secondary Radial Error (U): 10 meters > Secondary In-track Error (V): 62 meters > Secondary Cross-track Error (W): 4 meters > >

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Offtopic: Daiwa NS663PA Schematics
by PE0SAT 23 Jan '11

23 Jan '11

Hi, Thanks for reading. I had to replace a LM358 in a Daiwa NS663PA SWR/power meter and now I have to align the pep circuit. Is there someone that can send me a copy of the schematics or maybe the alignment method? 73 Jan PE0SAT

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