- Page 1 and 2: $12.00 RADIO AMATEUR SATELLITE COR
- Page 3 and 4: Copyright @ 1991 by The American Ra
- Page 5 and 6: Table of Contents AMSAT-NA Ninth Sp
- 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: Table 5 Results of Initial Simulat
- 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
- Page 55: Fig 5--Seven sided Marburg configur
- Page 59 and 60: Gateways to the 21 st Century Joe
- Page 61 and 62: Gateways to the 21st Century Figure
- Page 63 and 64: Gateways to the 21st Century Table
- Page 65 and 66: Gateways to the 21st Century Figure
- Page 67 and 68: Gateways to the 21st Century Figure
- Page 69 and 70: Gateways to the 21st Century Figure
- Page 71 and 72: · Gateways to the 21st Century Int
- Page 73 and 74: 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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Telemetry :- Past Present and Futur
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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 Futur
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Telemetry :- Past Present and Futur
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Telemetry :- Past Present and Futur
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Telemetry :- Past Present and Futur
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Telemetry :- Past Present and Futur
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Telemetry:- Past Present and Future
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Telemetry :- Past Present and Futur
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Telemetry :- Past Present and Futur
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Telemetry :- Past Present and Futur
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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
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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 (
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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