warren consolidated schools international space station contact march 14, 2014
TRANSCRIPT
The ARISS Program PartnershipUS Partners
AMSAT: Radio Amateur Satellite CorporationARRL: The National Association for Amateur Radio
NASA
International PartnersAmateur Radio organizations and Space Agencies in
Europe, Canada, Japan and Russia
ARISS Goals•Inspire an interest in science, technology,
engineering and math (STEM) subjects and in STEM careers among young people
•Provide an educational opportunity for students, teachers and the general public to learn about space exploration, space technologies, radio science, wireless technology and Amateur Radio
•Provide an opportunity for amateur radio experimentation and evaluation of new technologies
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Transceiver with 50–100W outputTransceiver with 50–100W output
The ISS radio uses a small antenna that is occasionally obscured by parts of the The ISS radio uses a small antenna that is occasionally obscured by parts of the ISS structure. A strong signal from the ground station reduces the effect of ISS structure. A strong signal from the ground station reduces the effect of signal blockage and helps overcome any interference on the frequency, making signal blockage and helps overcome any interference on the frequency, making it easier for the astronaut to understand the student’s questions. it easier for the astronaut to understand the student’s questions.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Transceiver with 50–100W output, 1kHz tuning stepsTransceiver with 50–100W output, 1kHz tuning steps
Staying close to the Doppler-shifted uplink and downlink frequencies helps Staying close to the Doppler-shifted uplink and downlink frequencies helps keep the signal within the bandpass of the receivers (especially the narrow keep the signal within the bandpass of the receivers (especially the narrow bandpass of the Ericsson radio). This produces better audio throughout the bandpass of the Ericsson radio). This produces better audio throughout the contact and allows a usable signal closer to acquisition and loss of signal contact and allows a usable signal closer to acquisition and loss of signal (which means a longer contact and more questions answered).(which means a longer contact and more questions answered).Larger tuning steps (such as 5 kHz) are not adequate.Larger tuning steps (such as 5 kHz) are not adequate.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Transceiver with 50–100W output, 1kHz tuning steps, and 21 memories capable of Transceiver with 50–100W output, 1kHz tuning steps, and 21 memories capable of storing split frequencies.storing split frequencies.
Doppler correction of uplink and downlink frequencies is required. Computer Doppler correction of uplink and downlink frequencies is required. Computer Control is possible, but using manually switched radio memories is Control is possible, but using manually switched radio memories is recommended because of easier setup and reduced risk of failure.recommended because of easier setup and reduced risk of failure.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Low-loss coax (such as 9913 or LMR- 400)Low-loss coax (such as 9913 or LMR- 400)
Mast mounted receive pre-amplifierMast mounted receive pre-amplifier
For safety and interference reasons, the ISS radio has limited power output (5 For safety and interference reasons, the ISS radio has limited power output (5 watts for the Ericsson radio). Low-loss coax and a pre-amp help to get the best watts for the Ericsson radio). Low-loss coax and a pre-amp help to get the best possible signal to the receiver, making the astronaut’s answers easier to possible signal to the receiver, making the astronaut’s answers easier to understand and increasing contact duration.understand and increasing contact duration.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
14 element yagi antenna with switched circular polarity
Signals from the ISS quarter-wave vertical antenna become circularly polarized Signals from the ISS quarter-wave vertical antenna become circularly polarized while passing through the ionosphere. An antenna with switched circular while passing through the ionosphere. An antenna with switched circular polarization captures a stronger signal and can eliminate (or greatly reduce) polarization captures a stronger signal and can eliminate (or greatly reduce) polarization-induced signal dropouts, improving the quality of the contact.polarization-induced signal dropouts, improving the quality of the contact.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Antenna rotators for azimuth (0–360°) and elevation (0–180°), with interface for computer control
Elevation capability of 180° with flip-mode operation prevents a signal dropout (one minute or more) if the ISS crosses the azimuth rotator’s dead spot.
Recommended Stationfor Direct Contacts
PRIMARY STATIONPRIMARY STATIONThe recommended primary station consists of:The recommended primary station consists of:
Computer Running tracking software for antenna control (including flip mode operation)
Computer control (with an accurate time setting and the latest TLEs) gives Computer control (with an accurate time setting and the latest TLEs) gives accurate tracking for maximum signal capture. accurate tracking for maximum signal capture.
Recommended Stationfor Direct Contacts
BACKUP STATIONBACKUP STATIONThe backup station allows a minimal contact in case the primary station fails during the contact.The recommended The recommended BACKUPBACKUP station consists of: station consists of:
Transceiver with 50–100W output, 1-kHz tuning steps, and 21 memories capable of storing split frequencies
Power amplifier with 100–200W output (optional)
Low-loss coax
Mast-mounted receive pre-amplifier
Omnidirectional antenna, either vertical (preferred) or eggbeater style
Uninterruptable power source (UPS or battery)
Jerry BegelJerry Begel(W9NPI)(W9NPI)
Ed WaltonEd Walton(N8LBS)(N8LBS)
Steve MichalskiSteve Michalski(KB9UPS)(KB9UPS)
MentorMentor
Tuyen DuddlesTuyen Duddles(KD8YZK)(KD8YZK)TeacherTeacher
Mark SupalMark Supal(KD8YZL)(KD8YZL)TeacherTeacher
Larry KozielLarry Koziel(K8MU)(K8MU)LeaderLeader
Gordon ScannellGordon Scannell(KD8COJ)(KD8COJ)
John TeagardenJohn Teagarden(AA8UU)(AA8UU)
Gerry TreasGerry Treas(K8GT)(K8GT)
Bernie HilderbrandBernie Hilderbrand(W8NBC) - SK(W8NBC) - SK
Bob AdamsBob Adams(W8BHF)(W8BHF)
Meet Part of the TeamMeet Part of the Team
Contact Us
Websites for more information:
www.ariss.org
www.arrl.org/ARISS
www.amsat.org