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

over simplification
by w7lrd＠comcast.net 29 Jul '09

29 Jul '09

Greetings I realize my thinking is probably an over simplification. The Shuttle can pack about 38,000lb to a 51 degree orbit. Even a 25 Lb satellite would only be about less that one tenth of one percent of that. With the shuttle going up every few months, we "could" have a bunch of fun birds up there. Could we not have a few small bucket sized satellites sitting on the shelf ready to go? Preferably with a sort of L/S band capability, we only have AO-51 that can do that, and that is seldom. It will be over 100 degree F. in Seattle today, I have one cool room, with little to do but think about this stuff. keeping cool 73 Bob W7LRD

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SDR source for amsat-uk project?
by andy thomas 29 Jul '09

29 Jul '09

Here is a wire component (not smd!) source for a 7MHz (>2nd IF?) SDR receiver: http://zao.jp/radio/66RF/index_e.php thanks to colin G1IVG (I haven't built mine yet). It could be part of the amsat-uk dedicated SDR receiver for FUNSAT?would need a front end.. 73 de andy G0SFJ

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Re: TS2000
by Bruce Semple 29 Jul '09

29 Jul '09

Hi Peter -- Sorry for the poor sentence construction -- It is my belief you have to use the rear connector for 9600 -- you cannot use the earphone / speaker connector ... I was trying to ask if you were ... Clarity is important .. 73, Bruce WA3SWJ At 01:22 PM 7/29/2009, Peter Gibson wrote: >Hi Bruce >Thanks for the reply yes tried all the sub menue,,,but have not tried to >feed the audio > From the earphone will give it a go >Thanks again Pete G7LJA > >-----Original Message----- >From: Bruce Semple [mailto:[email protected]] >Sent: 29 July 2009 15:57 >To: Peter Gibson >Subject: Re: [amsat-bb] TS2000 > >Hi Peter -- >Have you switched the Extended Menu option -- I think it is number >45? 47? -- something like External TNC speed 1200/9600 >(I am away from my radio right now) >My observation is that this switch causes the audio from the detector >-- to bypass the internal audio processing an be fed directly to the >audio out on the rear connector. >Are you using the rear connector - vs tying into the earphone jack? > >It has the same effect on the input signal -- bypassing the internal >audio processing -- and this is why I typically have to provide more >"audio drive" when running 9600 baud. > >Feel free to contact me of the list -- > >73, >Bruce >WA3SWJ > > > >At 05:26 AM 7/28/2009, you wrote: > >Hi > > > >Need info on a TS2000 problem...radio not decoding 9k6 on either the > > > >Internal tnc or an external tnc. Works fine on 1200 > > > >Phoned Kenwood all they want is for the radio to be sent back > > > >73 peter G7LJA > > > >_______________________________________________ > >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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Virgin Galactic & Small Satellites
by Rich Dailey (Gmail) 29 Jul '09

29 Jul '09

Virgin Galactic Deal Targets Small Satellite Launches. "Whitehorn said a business plan is being evolved by working very closely with Surrey Satellite Technology Limited, a leading small satellite company based in Guildford, United Kingdom. That group has already delivered operational space missions for a range of applications including Earth observation, science and communications. http://www.space.com/news/090728-virgin-galactic-satellite-launch.html Rich, N8UX

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Re: AO-51
by David Wing 28 Jul '09

28 Jul '09

Nothing heard on the 0119 UTC North American pass of AO-51 73, David K6CDW DM04 * Subject: [amsat-bb] Re: AO-51 * From: Francisco Jiménez-Martín, EB1IAT< <mailto:[email protected]> eb1iat@xxxxxxxxx> * Date: Mon, 27 Jul 2009 20:09:31 +0200 * DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;h=domainkey-signature:received:received:from:to:references:in-reply- to:subject:date:message-id:mime-version:content-type:content-transfer-encodi ng:x-priority:x-msmail-priority:x-mailer:importance:thread-index:content-lan guage;bh=7sVPvFwO//0edSShYxGhYsweO8B8TBTIC+IxzKbjb8E=;b=h3O3IdeNvro4jyYKY6ny inFVXYXcEp0f8psbgp0txpNj0dVWDvyKKEX/HbEOU6/VwajUaGvexd3SebnOdmjLmYKMIYgffVdE Gp0Dz/rVMpjPx8QgVutH4Vt20FOK3eA2g5X5haf3BTQ+aGNJHqHi8Ua7mZO7w45a5HukxsM4T8M= _____ size=2 width="100%" align=center> Hello All, I can confirm that the bird is still down, nothing heard during the pass of 17:41 UTC (Orbit #26.679 + 5 minutes) almost over my QTH in IN70jv. Regards from Spain, EB1IAT - Fran -----Mensaje original----- De: amsat-bb-bounces(a)amsat.org [ <mailto:[email protected]> mailto:[email protected]] En nombre de Alan P. Biddle Enviado el: lunes, 27 de julio de 2009 15:22 Para: amsat-bb(a)amsat.org Asunto: [amsat-bb] Re: AO-51 Morning, The 435.150 MHz TLM downlink was on at the 1308 UTC pass over the US. The data shows about 1 watt on the downlink. Progress is being made. Alan WA4SCA _______________________________________________ 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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G-5400B Rotor / Elevation not working
by Bobby Lacey 28 Jul '09

28 Jul '09

I have a Yaesu G-5400B and the elevation side of the control box seems to have stopped working. The actual elevation rotor has also stopped responding as well. I hooked up a working elevation rotor to test and didn't get any response out of it. Has anyone experienced this or know of something I should look before before I start tracing the schematic? Please respond to me directly unless the list thinks this question warrants it's own thread. 73 Bobby KF4GTA

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FUNcube a UK Linear Transponder Satellite
by David Johnson 28 Jul '09

28 Jul '09

Hi, AMSAT-UK has announced a new amateur satellite project – FUNcube – that features a 435 to 145 MHz Linear Transponder for SSB/CW operation. The project has received major initial funding from the Radio Communications Foundation (RCF) and is expected be developed in collaboration with ISIS-Innovative Solutions in Space BV. FUNcube is an educational single cubesat project with the goal of enthusing and educating young people about radio, space, physics and electronics. It will support the educational Science, Technology, Engineering, Maths (STEM) initiatives and provide an additional resource for the GB4FUN Mobile Communications Centre. The target audience consists of primary and secondary school pupils and FUNcube will feature a 145 MHz telemetry beacon that will provide a strong signal for the pupils to receive. It is planned to develop a simple receiver board that can be connected to the USB port of a laptop to display telemetry in an interesting way. The satellite will contain a materials science experiment, from which the school students can receive telemetry data which they can compare to the results they obtained from similar reference experiments in the classroom. FUNcube is the first cubesat designed to benefit this group and is expected to be the first UK cubesat to reach space. More details can be found at: http://www.uk.amsat.org/content/view/696/68/ 73 Dave, G4DPZ AMSAT-UK 1267 AMSAT-NA LM-1260

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Help in collecting AO-51 telemetry values
by Gould Smith 28 Jul '09

28 Jul '09

I need some help from stations west of the US east coast to look at realtime AO-51 telemetry during a pass over your QTH. Please send me AO-51 realtime values of : Battery 1 temp and Battery 1 voltage. I haven't gotten far enough in the reload process to collect WOD as a file. Just a few values if they are changing is sufficient. 73, Gould, WA4SXM AO-51 Command team member

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AO-7 mentioned in Scientific American
by Webmaster 28 Jul '09

28 Jul '09

Article entitled "Space Aged: 10 Spacecraft from Decades Past That Are Still Ticking [Slide Show]" has a nice slide with text and a link. Pretty cool eh? Enjoy. http://preview.tinyurl.com/kuryu9 73 John Meeks KC8ZFN

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Re: TS2000
by Henk, PA3GUO 28 Jul '09

28 Jul '09

Dear Peter, The TS2000 can do almost anything one can dream of. As a result, it has many menu settings (SW). For the TNC are also many settings in the menu (number 50). 50A Packet filter bandwidth 50B AF input level for Packet 50C MAIN band AF output level for packet 50D SUB band AF output level for packet 50E MAIN/SUB band: External TNC [MAIN,SUB] 50F Data transfer speed: External TNC [1200,9600 bps] Is only RX not working, or also not TX ? Anyway, best is to go to yahoo groups: http://groups.yahoo.com/group/KenwoodTS-2000/ The other group (http://groups.yahoo.com/group/adjust_ts2000) suggested is less active as this one. Henk, PA3GUO >Hi > >Need info on a TS2000 problem...radio not decoding 9k6 on either the > >Internal tnc or an external tnc. Works fine on 1200 > >Phoned Kenwood all they want is for the radio to be sent back > >73 peter G7LJA

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