February 2014 - AMSAT-BB - mailman.amsat.org

Space inventions for free*
by andy thomas 21 Feb '14

21 Feb '14

*offer available to ESA member states and Canada only. Looks a bit like ITAR in reverse. However I wonder if there are any eligible organisations in AMSAT-lands who might want this technology? http://www.esa.int/Our_Activities/Technology/TTP2/Highlights/Space_inventio… 73 de andy G0SFJ

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$50sat
by Howie DeFelice 21 Feb '14

21 Feb '14

The $50sat team is celebrating 90 days in orbit by proposing a technical challenge to all interested amateurs. $50sat is capable of responding to uplink command packets: There are 3 open packets: Test packet - $50SAT responds by sending the RSSI of the received packet in slow FM Morse. Request data packet - the normal data packet is sent. Request RTTY - The RTTY is sent. In addition all received packets result in two copies of the ack packet being sent, that contains the RSSI of the received packet. All the required information to accomplish this is available on the drop box location available through the $50sat web page at www.50dollarsat.info . Anyone that can demonstrate a successful command uplink by submitting a recording of the response packet along with the date, time and location of of the contact will receive aCertificate of Technical Accomplishment signed by all three builders of $50sat. Submissions can be madeto the $50sat email address; 50dollarsat at yahoo.com. This is a significant challenge because there is no magic black box that you can buy to do this. After 90 days of operation, the Kodak KLIC-7002 camera battery that powers the satellite has fallen off about 100mV, but operations still seem normal. We have also programmed a special 5th morse beacon to thank our launch sponsor and mentor prof. Bob Twiggs. Please give a listen for the message TNX KE6QMD on the FM Morse beacon. QSL cards are still available to anyone that posts telemetry, either hand copied CW or RTTY captures, to the 50dollarsat yahoo group. 73 and good luck to all from the $50sat team

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DoD release Electromagnetic Spectrum Strategy
by M5AKA 21 Feb '14

21 Feb '14

On Thursday, February 20, the Department of Defense (DoD) announced the release of its Electromagnetic Spectrum Strategy (EMS) to increase available spectrum in order to meet growing demand from the commercial wireless industry. The strategy follows the release of a memorandum issued in 2010 by President Obama titled “Unleashing the Wireless Broadband Revolution,” which requires 500 MHz of spectrum be made available for commercial use by 2020. Amateur UHF and Microwave spectrum is shared with DoD. The release of 500 MHz may result in more intensive use by the DoD of the remaining spectrum. DoD Electromagnetic Spectrum Strategy document http://www.defense.gov/news/dodspectrumstrategy.pdf DoD Announcement http://www.defense.gov/releases/release.aspx?releaseid=16547 ---- 73 Trevor M5AKA ----

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CAPE-2 over Brazil #1425
by Roland Zurmely 21 Feb '14

21 Feb '14

Three successful comands: 10:38 W5UL>W5UL-15>UI,C,F0: *clock201402210738CST# 10:38 W5UL-15>W5UL>UI,C,F0: *ACK# 10:38 W5UL>W5UL-15>UI,C,F0: *forcebeac# 10:38 W5UL-15>W5UL>UI,C,F0: +W5UL,CAPE-2,7,GR,201402210738CST,5762mV,01003,7,15C,-2C,ulcape.org# 10:38 W5UL>W5UL-15>UI,C,F0: *dump# 10:38 W5UL-15>W5UL>UI,C,F0: W5UL,5559,827,5543,3,5543,49,5543,GR,001,13,-1,ulcape.org# Please see here: http://www.qsl.net/py4zbz/cape.htm#n 73 de Roland PY4ZBZ GH70un

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Re: FUNcube Warehouse Upload Ranking Changes
by Andrew Glasbrenner 21 Feb '14

21 Feb '14

#22 likes it. I think it'd be neat to compare the rankings to latitude as well. My station has run almost full time collecting telemetry since launch, and I continue to slide down the list. I'm not upset or even bothered by it, but it illustrates how much more access time a high latitude station gets on a polar orbit as compared to say, a 28.3 degree latitude location. Competition has probably doubled the participation in this endeavor, which only helps the project. Plus, if it doesn't hurt anyone, why even care? Much better things to get tweaked about. 73, Drew KO4MA -----Original Message----- >From: David Johnson <dave(a)thejohnsonsonline.net> >Sent: Feb 20, 2014 4:10 PM >To: "Bill Bordy, NJ1H " <nj1h(a)comcast.net>, Amsat - BBs <amsat-bb(a)amsat.org>, EU_AMSAT(a)yahoogroups.co.uk >Subject: [amsat-bb] Re: FUNcube Warehouse Upload Ranking Changes > >Hi, > >It took 40 minutes to write the code of the train on the way to work >this morning and was >an interesting challenge and the Google Analytics spiked as soon as I >released and and announced it. > >So I'm happy with it, as are the the FUNcube team. One of those asking >for it, is part of the team. > >73 > >Dave, G4DPZ >FUNcube Warehouse Developer > >On 20/02/2014 19:57, Bill Bordy, NJ1H wrote: >> I need to do a sanity check of my reaction to the below. I took a deep >> breath and waited awhile before sending this email >> >> Am I the only one wondering why any user felt the need to have a >> column showing rankings added? >> >> 73, >> Bill >> NJ1H >> >> >> On 2/20/2014 11:40 AM, David A B Johnson wrote: >>> Hi, >>> >>> At the request of several users we have added another column to the >>> page which enumerates the position in the ranking as well as the >>> number of uploads. >>> >>> http://warehouse.funcube.org.uk/ranking.html?satelliteId=2 >>> >>> Current range is 1 – 536 >>> >>> 73 >>> >>> Dave, G4DPZ >>> >>> FUNcube Team Member >>> >>> _______________________________________________ >>> 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 > >_______________________________________________ >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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CAPE-2 over Brazil #1410
by Roland Zurmely 21 Feb '14

21 Feb '14

Two successful comands: *forcebeac# 1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=68> [08:10:47R] +W5UL,CAPE-2,3,OR,201301281914CST,5073mV,01000,3,12C,-1C,ulcape.org# *dump# 1:Fm W5UL-15 To W5UL <UI F/C Pid=F0 Len=56> [08:11:18R] W5UL,5424,817,5408,0,5413,0,5413,OR,001,10,1,ulcape.org# 73 de Roland PY4ZBZ GH70un

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Fun Mic Project
by Clint Bradford 21 Feb '14

21 Feb '14

If you're snowed in this weekend ... here's a simple project that might use up some of those spare parts in the garage ... http://www.instructables.com/id/Balanced-Microphone-From-An-Old-Telephone/ Clint K6LCS

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sqf file for ic9100
by Bruce 20 Feb '14

20 Feb '14

i have an ic-9100 enroute and will have it friday. i am going to get a new g5500 to replace my g5400. in the mean time, can someone share their sqf file and any other satpc32 file i will need to interface with the ic9100. fugured there is no need to reinvent the wheel. thanks 73...bruce<a href="https://overview.mail.yahoo.com?.src=iOS"> Sent from Yahoo Mail for iPhone</a>

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Cubesat 1 axis attitude control?
by Robert Bruninga 20 Feb '14

20 Feb '14

Need an AMSAT greybeard with attitude control experience. We want to use only one magnetorguer coil (a Z coil) to more or less keep our Z axis aligned with the Earth's axis (+/-30 deg) We figure if we energize the Z coil only twice per orbit while over the equator where the Earth's magnetic field is aligned with the poles we can eventually bring it into alignment. Then we maintain that alignment using white/black differential solar radiation pressure to maintain a fractional RPM about the Z axis. I need help from some greybeards to prove this is possible. Bob, WB4aPR

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ARRL Centennial QSO Party continued
by Paul Stoetzer 20 Feb '14

20 Feb '14

Sorry! I hit send somehow while trying to paste the link! The points tracking tool is here: https://centennial-qp.arrl.org/index.php 73, Paul Stoetzer, N8HM Washington, DC

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