June 2007 - Eagle (INACTIVE) - mailman.amsat.org

TeamSpeak conference for 12 June 2007
by Jim Sanford 12 Jun '07

12 Jun '07

Team: For some reason, although I can edit the EaglePedia page of team speak conferences to include the agenda for tomorrow night, when I save the changes, they don't take. (Dave Hartzell, please help! Additional request for improvement sepcor.) It's time to resurrect the monthly TeamSpeak conferences. I know why we missed May, I don't remember missing April.. The conference will be tomorrow night, 12 June 2007, at 2100 EDT, 1800 PDT, and 0100 ZULU. Therefore, here's my proposed agenda for tomorrow night: 1. UHF RX update -- Juan Rivera 2. S2 RX update -- Bill Ress 3. AMSAT Symposium planning -- me 4. Work Breakdown Structure -- Gould Smith and me. 5. (If present) V-band TX, Marc Franco 6. (If present) SDX, N4HY 7. (If present) ACP, N2MJI/K3IO 8. Whatever ELSE you want to discuss. Thanks & 73, Jim wb4gcs(a)amsat.org

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Phased Array Prototyping -- help wanted
by Tom Clark, K3IO 12 Jun '07

12 Jun '07

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Concerning Jim Sanford!
by Tom Clark, K3IO 12 Jun '07

12 Jun '07

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2007 Symposium -- call for papers
by Jim Sanford 11 Jun '07

11 Jun '07

Team: The first call for papers for the 2007 AMSAT Symposium has gone out, the second will go out shortly. Here's how I see it: This is a BIG year for Eagle. We need to have much to say and demonstrate. I expect to demonstrate: U-RX S2-RX V-TX SDX IHU anything else that comes together. I expect to see presentations from each and every team lead. We need to show the membership what we're DOING and reap the benefits therefrom (hint, hint). Specifically, I think we should present papers on: Project management and status (I am willing to present 45 minutes; I'd much rather talk for 45 SECONDS outlining what YOU will present -- you're doing the work!) U-RX S2-RX IHU/CAN-Do! V-TX SDX The LAB (with LOTS of photos!) Structure redesign Power systems Antennas ACP Orbit analysis/prediction/control Propulsion requirements I'd like to see each of you submit an abstract in the next week or so, and then a paper. If you can't be present to personally present the paper, let's get it published anyway, and give me the chance to find someone to present it for you. Matt, Phil, Bob: We REALLY need to publish something about the ACP. The last public pronouncement is the minutes of the San Diego meeting almost a year ago. Yet, the ACP is a (to some, THE) major Eagle payload. But all we've published is some musings on the phased array antennas. Matt, you talked about a "generic" digital package at Portland, it's time to at least articulate the things we're thinking about. Eagle should dominate the Symposium to the point that the ultimate arbiters of presentations say, "Enough!!" If you have questions or need guidance, please contact me. Again, it is very important that the Eagle team have a large presence at Symposium this year. Some would say it's not necessary, since we're on EaglePedia. I disagree: decades ago, in a Public Speaking course, I learned that, "You've got to tell them, and tell them, and tell them again.) days ago, in a recruiting/retention seminar, a marketing expert told me that you've got to tell them SEVEN, I say again, SEVEN, times. EaglePedia is only one. So, let's think about what we're doing, what we're planning to do, and what we've accomplished. Then let's write it down. By the way, much of what I have in mind here is information you need to send me anyway for my update to the Board of Directors, so this really isn't that hard. Please prepare something. Submit abstracts to Dan Schultz, and copy to me so I know what to expect. Thanks & 73, Jim wb4gcs(a)amsat.org

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New 70 cm Receiver Test Results
by Juan Rivera 11 Jun '07

11 Jun '07

Re: 70 cm Prototype Receiver Testing John, and group, I set up my shop this evening to take a look at the microphonic issue that I had noticed before Dayton. I decided to use my new SDR-IQ software defined radio instead of my HP 8566B spectrum analyzer. The SDR-IQ has a lower noise floor, is quiet, and doesn't heat up my shack. Of course it tops out at 30 MHz and the 8566B goes up to 22 GHz. But for this application all I needed was something to look at the IF output at 10.7 MHz. Before I got to the microphonics I noticed spurs and phase noise that I had not previously seen with the 8566B - a classic case of going to drain the swamp and then ending up fighting alligators... I've posted screen shots and test details on EaglePedia's 70 cm receiver page. Click here <http://www.juanr.com/pages/hobbies/ham_radio/Eagle/Testing_Resumed.htm> for a link to that top level page. Then go down to the Project Status area and open up Troubleshooting <http://www.juanr.com/pages/hobbies/ham_radio/Eagle/Testing_Resumed.htm> Resumes. I wouldn't get discouraged. This is why we built the prototype in the first place - to find all the little flaws that need attention. More to follow in a few days... P.S. I add new material to the end of these logs so if you've already read the earlier posting just scroll down to the new material at the end. I always try to note the date and time I last modified the log at the top so you can see if there is anything new since your last visit. 73, Juan WA6HTP

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Re: New 70 cm Receiver Test Results
by Juan Rivera 09 Jun '07

09 Jun '07

Re: 70 cm Prototype Receiver Testing 08 June, 07 John, and group, The spurs I mentioned yesterday are caused by the power supply. Follow the links below for details... 73, Juan WA6HTP Click --> <http://www.juanr.com/pages/hobbies/ham_radio/Eagle/Testing_Resumed.htm> ere's 70 cm Receiver testing to read latest log P.S. I add new material to the end of these logs so if you've already read the earlier posting just scroll down to the new material at the end. I always try to note the date and time I last modified the log at the top so you can see if there is anything new since your last visit.

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Re: Broadband amplifier paper for symposium
by Daniel Schultz 06 Jun '07

06 Jun '07

> Here is an abstract of a paper submitted to the October symposium, I thought > it might be of interest to the group. > > Dan Schultz N8FGV

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Florida AMSAT net is looking for guest speakers
by Andrew Glasbrenner 04 Jun '07

04 Jun '07

If you have an AMSAT topic that is near and dear to your heart, we would be happy to provide a forum for you to tell our members about it. The Florida AMSAT net is actively seeking guest speakers for our Thursday night net. Our net covers about 1/2 of the area of Florida or better, and has up to 40 participants per net, including international checkins via echolink. We have a very reliable echolink connection, so you may present your topic from your hi-speed internet linked computer, or possibly use a local rf system to connect. We are also working on providing reverse autopatch capabilities. We have had one previous guest speaker, Bob WB4APR, immediately after the deployment of RAFT and ANDE. That net was talked about for months, and we would like to begin a tradition of interesting and relevant guest speakers. Please contact myself or any of the three other net controls listed in the cc: if you'd like to participate as a guest speaker. 73, Drew KO4MA

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Hello from WA6HTP
by Juan Rivera 01 Jun '07

01 Jun '07

Hello to the wider AMSAT/Eagle community, This is my first posting to the AMSAT/Eagle mailer. For those of you who don't know me, I'm the team leader for the 70 cm Receiver construction and testing group. Out team on the west coast is constructing and testing the first prototype receiver. It recently returned from its trip to the Dayton Hamvention. While it was gone I took the opportunity to catch my breath and I purchased an inexpensive software defined radio. It's called the SDR-IQ and I've written a brief report which you can access via my web site <http://www.juanr.com/> or via the Eagle <http://www.amsat.org/amsat-new/eagle/EaglePedia/index.php/U-Band_Receiver> Receiver page. On the Eagle Receiver page you'll find quite a few logs detailing our progress so far. The SDR-IQ write up is at the top of the list. 73, Juan WA6HTP

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