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

help with ts 2000
by Nick Pugh 22 Jun '07

22 Jun '07

Our TS 2000 radio at the CAPE lab will not put out audio on the acc1 high speed port when the radio is in the satellite mode. We did a full reset and that did resolve the problem. Does the list have any suggestions?? thanks nick

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no go 1.2 on AO-51
by w7lrd＠comcast.net 22 Jun '07

22 Jun '07

Hello I'm not sure if I have some "operator trouble" or equipment snafus. Running an IC1271A 10 watts to a homebrew 40 T helix via 45 feet of 1/2 hardline. With a questionable connector. Eight feet of LMR400 to the antenna. I can hear some you you guys, but my up link is a no go. I'm transmitting on 1268.700 +/- 20. Considering doppler what is your uplink freq? I also might have some questionable construction methods with my antenna. I suppose if this were easy everyone would be doing it! -- 73 Bob W7LRD AMSAT member 28498 Seattle

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hardline jury rig
by w7lrd＠comcast.net 21 Jun '07

21 Jun '07

Hello Somewhere I saw an article about using various plumbing hardware and such to connect some 1/2 inch hardline to a N connector. I'm putting "something" together, but I can't find that article. Anyone know of that article or other information? -- 73 Bob W7LRD AMSAT member 28498 Seattle

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interesting matters on the web
by Bruce Robertson 21 Jun '07

21 Jun '07

Gang: Though the Delfi C3 project has already mentioned their photo weblog here, I thought it was worth mentioning that additional material is appearing there quite frequently, showing the computer interface checkout, mechanical fit test, and others. http://www.delfic3.nl/photoblog/ I believe this is a very important project for the future of amateur analogue communications in LEO because alongside other projects, its low-cost cubesat form-factor houses a linear U/V transponder. The most recent (June 2007) Amateur Logic video webcast includes (near its end) a short how-to on installing N-connectors on LMR400 cable. The presenter hacks his own crimping device using vise-grips and a bisected hex driver of some sort. I have to confess I have been buying expensive runs of pre-built cable because I know I'm terrible at installing N-connectors. I'd be interested to know what experienced installers think of this technique, and how it compares to other methods. http://www.amateurlogic.com I also wonder if there are special, amsat-related building or operating skills that might well be recorded in video for broadcasting on that show or just posted on YouTube for all to see. For example, to pick on a fellow Canadian, by my count, Clare, VE3NPC, has built 1000 helix antennas. A video showing his well-established construction techniques would really go a long way to helping others undertake such a project. I'd personally love to see a video of the operations of some of the fantastic cubesat operators out there, like Mineo, JE9PEL, and Mike, DK3WN. Just a thought. In any case, I think Amateur Logic illustrates that competent presenters provide a great deal to their audience and are much loved, even if the video is not yet ready to be broadcast on the BBC. 73, Bruce VE9QRP

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More about Space-Track.org
by Michael R. Owen 21 Jun '07

21 Jun '07

Dear friends, More... it appears that *none* of the Keplerian element files for June 21, PM contain any data. Take care! MRO -- Michael R. Owen, Ph.D. Northern Lights Software Associates http://www.nlsa.com

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AO-51 L/U down for the next orbit
by Gould Smith 21 Jun '07

21 Jun '07

I will be collecting data during the 0025Z - 0210Z orbit tonight, and the L/U repeater will be off. I expect to restore the L/U operation about 0213Z. 73, Gould, WA4SXM AO-51 Command Station

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Re: TS-2000X-SAT MODE
by Andrew Glasbrenner 21 Jun '07

21 Jun '07

That's the way full duplex satellite rigs work, totally normal. Put on a set of headphones before you work the satellite to prevent feedback. This way you'll know if you are making the bird, or colliding with another user. 73, Drew KO4MA -----Original Message----- >From: Pete Norris <k1hzu1(a)yahoo.com> >Sent: Jun 21, 2007 10:02 AM >To: amsat-bb(a)amsat.org >Subject: [amsat-bb] TS-2000X-SAT MODE > >Hi All: >Setup is AO-51, DL 435.300-UL 145.920 FM. On transmit, the 435 receive stays on. Is this normal or am I missing something? I can't seem to locate anything about it in the manual. Works fine on lower bands. >Pete, K1HZU > > >--------------------------------- >Get the Yahoo! toolbar and be alerted to new email wherever you're surfing. >_______________________________________________ >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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first 1200 success
by John Price 21 Jun '07

21 Jun '07

Well I got on AO-51 this morning and worked WO3T for my first ever 1200 mhz contact. The local retired GE wizard built up a 1268.7 transmitter using a master II and a signal generator for the reference signal. The antenna is a loop yagi with about 10 loops. The feed is a piece of LDF4. I mounted it on my field day antenna setup which I have out in the yard for testing and pointed with the 5400 rotor. Uni-trac ran the downlink radio on 435 and displayed the 1268.7 doppler so I knew were to tune the signal generator. Since the pass was about 74 degrees at overhead the signals were very strong. All this said...I guess 1200 might be fun after all. Sure got me and the Wizard fired up. Hope everyone else has fun with it too. 73's <<John -- N4QWF Amateur Radio Operator AO-7,AO-27,SO-50,AO-51,VO-52 Internet N4QWF(a)AMSAT.ORG Formerly KC4AHW VK3FEZ Amsat Member #27845 DXCC #33,478 VUCC SAT #135 WAS SAT #296 51 on 51 #13 LON -79.25 LAT 37.45 Grid FM07 >From the Foothills of the Blueridge

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TS-2000X-SAT MODE
by Pete Norris 21 Jun '07

21 Jun '07

Hi All: Setup is AO-51, DL 435.300-UL 145.920 FM. On transmit, the 435 receive stays on. Is this normal or am I missing something? I can't seem to locate anything about it in the manual. Works fine on lower bands. Pete, K1HZU --------------------------------- Get the Yahoo! toolbar and be alerted to new email wherever you're surfing.

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23cm loop yagi information
by Larry 21 Jun '07

21 Jun '07

Hello! I've asked this question on the Mw reflector, and want to see how people are handling this situation here. I'm looking for a 23cm antenna to use both terrestrial and on satellites. In particular, the Directive Systems seem to have a great antenna, but the 2345LY covers 1270-1300 - could I possibly use this antenna for both activities without too much loss? What are the chances it can be tuned for 1268-1298? I didn't want to buy 2 antennas if I don't have to. Can a loop yagi even be used on the birds? Thanks in advance... Larry

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