October 27-29, 2000 - Klofas.com

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STATE OF MAINE OFFICE OF THE GOVERNOR 1 STATE HOUSE STATION AUGUSTA, MAINE 04333-0001 ANGUS S. KING, JR GOVERNOR October 27,2000 Dear Friends, On behalf ofthe citizens ofMaine, it is a pleasure to welcome you to our state for the 18 th AMSAT Space Symposium and Annual Meeting. Maine, like other states, features a number ofamateur radio operators who use this technology to communicate with individuals across the country and the world. With the innovations that satellite communication now offers, the advances possible in this field are dramatic. As we have seen with other advancing technologies such as e-mail and the Internet, the world can become smaller and more cohesive. The thought of someone in Portland or Presque Isle, Maine communicating with a citizen in Singapore or Australia through the use ofsatellite-connected radios is astounding. I look forward to seeing the progress that your group will make in these ventures. Again, welcome to Maine. a I • 1 PHONE: (207) 287-3531(Voice) rRIN""J'ED 0:-.. RECYUED rAPER FAX: (207) 287-1034 (207) 287-6548 (TTY)
Welcome It is with great pleasure that I personally welcome each of you to the 2000 AMSAT-NA Annual Meeting and Space Symposium. This meeting continues a proud tradition that AMSAT started in the early 1980s to provide an annual forum for amateur satellite enthusiasts to gather and share their ideas among likeminded friends and colleagues. What's more, as you will soon see (if you haven't already) my own native Northern New England is a beautiful setting for meetings this time of year. Make sure you plan some time away from the official proceedings to enjoy your unique surroundings. This year marked yet another major milestone in our Phase 3-D project. In January, P3-D arrived safely at the launch site in Kourou, French Guyana to await a ride to orbit on an Arianespace Ariane 5 launch vehicle. What's more, if all is going as planned (and that is a BIG 'if' as I write these words!) many of our Phase 3-D experimenters will have been working very hard at the launch site to prepare the satellite for launch. However, as I have been saying for many months, a satellite sitting at the launch site in Kourou is still a far cry from one that is up and running in orbit. Unfortunately, what this means for the Phase 3-D project is that the most uncertain time for us may still lie ahead. That is, anyone who has not been directly involved in the design, construction and launch ofone of our complex spacecraft simply cannot have the same deep awareness of the EXTREME level of uncertainty that faces any group contemplating such endeavors. Besides the obvious uncertainties of never having enough skilled hands and brains (or time) available to build them, there is the added uncertainty of low (often nonexistent!) leftover cash for parts, integration, as well as test and transport of the satellite. This is in addition to trying to design and implement innovative ways to account for the myriad of uncertainties associated with thermal, radiation and vacuum extremes that the spacecraft will encounter in orbit. Then there is the minor (?) concern of placing your brainchild on top of a big bomb (a.k.a. "rocket") specifically designed to hurtle it into the cosmos at several times the normal force of gravity. By any measure, AMSAT as a whole has come a long, long way, since our beginnings. The future, with a number of new satellites slated for launch in the near future, and a number of others on the drawing board, is very, very bright. However, we need to continue to remember that what we do is fraught with uncertainty. I also ask for your continued support in giving our experimenters, many of whom will be present at our meetings here, all the respect and encouragement we can collectively muster. As many of you also know by now, this will be my last AMSAT Annual Meeting at which I will be presiding as your President. I have always believed that in volunteer organizations, each of us should endeavor to rise from the ranks to serve in positions of leadership, but then, after serving honorably in those positions, we should strive with equal vigor to return to the ranks from whence we came. This approach keeps the organization fresh and alive with new ideas and new ways of approaching the many challenges we face. I believe that serving four years as your Executive Vice President and then for two years as your President are quite enough. It is time to bring a fresh face to the President's chair. As I step aside, my only hope is that in just one small way, my leadership has left the organization just a little bit better off than when I arrived. 73, Thanks again for joining us in Portland and have a great weekend! Keith Baker, KBlSF President, AMSAT-NA 2
Page 1 and 2: jL 7££ $15.00 A MSAT RADIO AMATEU
Page 3 and 4: Copyright © 2000 by The American R
Page 5: Table of Contents (continued) APRS
Page 9 and 10: had characteristic perigee values o
Page 11 and 12: the digital experimenters will want
Page 13 and 14: Fig.1, P3E Rendered overvieW
Page 15 and 16: 10 Fig.3, P3E Line Overview
Page 17 and 18: Amateur Radio On-board the Internat
Page 19 and 20: of "transportable stations" which c
Page 21 and 22: The packet bulletin board system on
Page 23 and 24: Side view of the EVA handrail ada
Page 25 and 26: wishing to review the status of the
Page 27 and 28: 2. CUBESAT DEVELOPMENT PROGRAM Aft
Page 29 and 30: The P-POD is constructed using 7075
Page 31 and 32: N 0"1 4 .3 2 NOTES: IN..ESS OTI£RW
Page 33 and 34: Payload services are designed to pr
Page 35 and 36: Assembly is simple. The RF circuit
Page 37 and 38: Level 2) To receive some beacons fr
Page 39 and 40: Amateur radio frequencies (and lice
Page 41 and 42: 2. These organizations could move t
Page 43 and 44: 5 "Space System Developments at Sta
Page 45 and 46: On 10450, it may not be enough to f
Page 47 and 48: Converters A converter converts one
Page 49 and 50: 44 falls offby 3 dB from the highes
Page 51 and 52: And higher still: S and C Bands Her
Page 53 and 54: Summary The higher bands on P3D off
Page 55 and 56: Mountaintop, P A 18707 (570) 868-56
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product using another media. Those
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Ground Track The unit vector (V LCH
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sin((J) = The velocity vector is th
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FIGURE 2 DEFAULT SETTINGS FOR A TIM
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identified under the AMSAT Output F
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The command and control mode VN dat
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Most of the TNC-2 based TNCs have a
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Ahstract Distributed Processing Goe
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SETI@)home's power derives from cle
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ARGUS@home won't happen overnight.
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Figure 3: Graham Vincent, SEll Leag
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o lola••ec("dmg1en'lth ~ 339 31
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On AO-27 and UO-14 the downlink is
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little planning even urban settings
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A Spread Spectrum Wideband Transpon
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nadir-pointing attribute of the Pal
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signal, one to monitor the station'
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Instanffune for the FT-IOO Anthony
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The flIst problem is that you canno
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Due to the way that the FT-IOO work
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Auxiliary Receiver InstantTune lets
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Similarly, the "itstart.bat" file i
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Step 1 Quit from InstantTrack putti
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Once you have turned on , control t
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DOWN step DATA 1 3 Tuning Complete
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EXAMPLES: 1. Change COM 3 to use IR
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The name of the satellite must matc
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eacon 29.4081 cw Auxiliary Fixed Tr
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• Check to see that the COM port
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Even with P3D in orbit and operatin
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'atelllte :je:?lmJC!gNumbeet::'~ Ep
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REFERENCES Specific technical infor
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The potential of two-way satellite
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Igates with operators that have vol
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any time while also monitoring the
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universal frequency where ALL APRS
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DISTRIBUTING LIVE SAT TRACKING DATA
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The Houston AMSAT Net I earned myHa
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VNIW Real Audio Geostationary Comme
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finnware (verses EPROM) and the EEP
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Rotor Calibration First and foremos
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Deadband Commanded Value ,/ For exa
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of dissimilar radio models. For exa
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Calibration Limits Command Meaning
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and the T APR EasyTrakTM AzlEI Ro
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Software Design If the world was fl
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Rotor Control Window 1 (Normal Mode
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Automatic Weather Balloon Tracking
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148
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Camera Tracking Recent events have
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BEARING is only accurate if you are
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Applications of PIC Microcontroller
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TNC must simultaneously be in commu
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This leads to the selection ofa mod
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Distributed system for LEO satellit
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a sender and a lot of receivers, po
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Figure 2. Processes in the main app
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The new G3RUH software modem for th
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Figure 3. Multirate processing Figu
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MODE-V/I EASY-SATS FOR EVERYONE Bo
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usable downlinks across a 30 Khz ba
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• First is the requirement for a
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Thayer School of Engineering at Dar
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mechanical support as well as the s
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In tandem with data acquisition and
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opportunities. Modularity by design
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AMSAT SYMPOSIUM PRESENTATION PHASE
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emember awaiting the sun to go down
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communications, this will open up a
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About the Author ... Dominick ''Dee
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October 27-29, 2000 - Klofas.com

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