November 8-10, 1991 - Klofas.com

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Foreword These papers, prepared for the 1991 AMSAT Technical Symposium and joint AMSAT / ARRL Educational Workshop, represent the state of the art in Amateur Radio space experimentation. Many readers will recognize the names of authors who have long been associated with AM SAT's and ARRL's efforts to further the amateur space program. Others are less well known, but bring an equally farsighted vision to these Proceedings. The ARRL is pleased to have the opportunity to publish these Proceedings. We trust that it will serve to stimulate even greater interest in the amateur space program. If you're among those whose interest has, thus far, been latent, why not contact AMSAT and see where your talents and abilities might fit in? You could soon find yourself contributing to a deep-space probe or a mission to Mars! November 1991 David Sumner, K1 ZZ Executive Vice President, ARRL
Table of Contents AMSAT-NA Ninth Space Symposium Motion and Color Video Via the Phase 3D Satellite: Replacing A TV with ADV - A Status Report By John. Champa, KBOCL, and Todd Maxwell ............... 1 Comments on Proposed AMSAT MARS - An Experiment By Martin Davidoff, PhD, K2UBC . . . . . . . . . . . . . . . . . . . . . . . .. 6 A Simulator for PACSAT-1 Downlink Traffic By Robert J. Diersing, N5AHD ......................... 11 An Amateur Space Exploration Ground Station By Peter D. Goldman and Brent Helleckson . . . . . . . . . . . . . . .. 23 What's Up With WEBERSAT By Stephen Jackson and Jeffrey Raetzke ................. 29 The Shape of Things to Come By Dick Jansson, WD4FAB . . . . . . . . . . . . . . . . . . . . . . . . . . .. 44 Gateways to the 21 st Century By Joe Kasser, W3/G3ZCZ ........................... 53 Telemetry: Past, Present and Future By Joe Kasser, W3/G3ZCZ ........................... 69 Orbit Selection Considerations for Fourth Generation AMSAT Spacecraft By Jan A. King, W3GEY, and Stephan Eckart, DL2MDL ....... 99 "S Band H : Principles and Practice By Edward Krome, KA9LNV ........................... 120 VITA Opertions Using UoSAT-3 By Eric Rosenberg, WD30, and Gary Garriott, WA9FMQ ...... 125 A Radio Astronomy Experiment for Phase 111-0 and the Solar Sail By Daniel Schultz, N8FGV ............................ 137 Demonstrating Celestial Mechanics Through Measured Doppler Shift By H. Paul Shuch, N6TX ............................. 140 Solar Sail Expedition to the Moon and Mars By Robert L. Staehle, John M. Graham and John Champa, K8DCl ............................ 151
Page 1 and 2: $12.00 RADIO AMATEUR SATELLITE COR
Page 3: Copyright @ 1991 by The American Ra
Page 7 and 8: MOTION AND COLOR VIDEO VIA THE PHAS
Page 9 and 10: etc. with digital video broadcasts,
Page 11 and 12: would allow far more users to be ac
Page 13 and 14: THB PROJECT A minimal mission will
Page 15 and 16: As to transponder frequency, either
Page 17 and 18: A SIMULATOR FOR PACSAT~l DOWNLINK T
Page 19 and 20: FILE SERVER TRAFFIC STATISTICS The
Page 21 and 22: In addition to supplying the simula
Page 23 and 24: Table 5 Results of Initial Simulat
Page 25 and 26: about evenly divided. The only valu
Page 27 and 28: lations assume the same user traffi
Page 29 and 30: AN AMATEUR SPACE EXPLORATION GROUN
Page 31 and 32: themselves seem to be in good condi
Page 33 and 34: mechanism as well as aiming the dis
Page 35 and 36: WHAT'S UP WITH WEBERSAT by Stephen
Page 37 and 38: As shown in FIGURE 2, the satellite
Page 39 and 40: L-Band Video Uplink Webersat's 1.26
Page 41 and 42: cost, Charged coupled Device (CCO)
Page 43 and 44: Level Cantral Meter Mode (Peak I Av
Page 45 and 46: of valid photo attempts have occurr
Page 47 and 48: BIBLIOGRAPHY "CCD Cameras: Digital
Page 49 and 50: FIGURE 3 THE SUN PICTURE TAKEN JU
Page 51 and 52: Studies by DJ4ZC showed that the so
Page 53 and 54: Fig 1--Phase IV, the AMSAT-NA geost
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Fig 5--Seven sided Marburg configur
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Gateways to the 21 st Century Joe
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Gateways to the 21st Century Figure
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Gateways to the 21st Century Table
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· Gateways to the 21st Century Int
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Gateways to the 21st Century S11m m
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Telemetry: Past, Present and Futur
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Telemetry :- Past Present and Futur
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Te1emeuy :- Past Present and Future
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Telemetry:- Past Present and Future
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ORBIT SELECTION CONSIDERATIONS FOR
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elements that will be slowly pertur
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""'/ = 7/ '71,.. '3 W= 27iJ~ FIGURE
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Higher M/N values correspond to low
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TABLE 2 ORBITAL ELEMENTS MIN =3/2
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,~, ECHO 319 ms ,,~, FRQ 2400.0000
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FIGURE 15 FIGURE 16 ....> "430 FIGU
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several days until the apogee drift
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The argument of perigee has an effe
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P3DorbiIs AO-13 long-tenn predictio
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PRELIMINARY DECISION OF THE PHASE..
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eceive filtering is not necessary.
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While modern technology has brought
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VITA Operations Using UOSAT-3 by Er
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Performance of ground stations in t
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The equipment was then inventoried
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But we cannot do it alone. VITA is
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80386SX -type computer Table II. E
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November (cont..) 6. Ghana 7. Niger
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A RADIO ASTRONOMY EXPERIMENT FOR PH
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antenna at all, or with the aerospa
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where m represents the mass of the
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than the transmitted signal. The se
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are of course the familiar Doppler
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ESTIMATING ORBITAL PERIOD The Doppl
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CONCLUSIONS Since their inception i
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SOLAR SAIL EXPEDITION TO THE MOON A
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LAUNCH CONFIGURATION The launch -co
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Propulsion Module Spacecraft Bus P
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packet techniques to guarantee virt
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ADSAT THE ASTRONAUT DEPLOYABLE SAT
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in January of 1990. The satellite c
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For satellite reception to be made
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A final significant experiment to b
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FUTURE PROGRAMS Building a satellit
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SUNSAT - A JOINT UNIVERSITY OF STEL
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The power system is conventional. T
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IMAGE-ENABLING YOUR SATELLITE STATI
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chip to provide an 8 bit. (256 leve
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can be done a m:inimal expense thro
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available once again from D RIG B B
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Fig. 2. HRPT image of Florida taken
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.... co w Fig. 6. Soviet 0 kean 2 A
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Jileng Tun I-B. 28 January 1991, 08
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SEDSAT 1 Overview SEDSAT 1 is a mic
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tested on the mode A transponder is
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Foreword We're pleased to publish,
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spacecraft and receiving telemetry.
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SAREX.-A POST FLIGHT REPORT FROM TW
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oth the students and the public ali
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I posted a notice on packet about o
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o o the dropouts could hopefully be
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Amsat - NA Technical Symposium and
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We can compare an amateur radio sat
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Let me wish you all a very fruitful
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descending whistler tones appeared
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that uses the electrical energy to
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USING THE RECEIVER Even though hig
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Bringing Space into the Classroom
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Bringing Space into the Classroom d
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Bringing Space into the Classroom R
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Bringing Space into the Classroom (
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Bringing Space into the Classroom F
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Bringing Space into the Classroom o
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Bringing Space into the Classroom a
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· ., '''/ .~. Chaminade MicroSat P
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4. Watch the time on Traksat and mo
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~ o..:c III til ..... ::> 'tI > ..
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SOLAR ECLIPSE OF JULY 11,1991 LUSA
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To start the program type: C:\TRAKS
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Using Amateur satellite and Weather
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packet radio, the educational commu
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the schools. 5. Have this organizat
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ought new experiences into the clas
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The University of Stellenbosch and
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Space Education and the SEDSAT 1 Pr
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SEDSAT 1, Amateur Radio, and a Spac
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Conclusions Some of the goals of th
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November 8-10, 1991 - Klofas.com

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