Warren Consolidated Schools

International Space Station Contact

March 14, 2014

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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

Successful ARISS EventsSuccessful ARISS Events

Successful ARISS EventsSuccessful ARISS Events

The Proposal Timeline

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)

K8MU – Larry KozielK8MU – Larry Koziel

ORBITRONORBITRON

http://www.stoff.pl

Nova For WindowsNova For Windows

http://www.nlsa.comhttp://www.nlsa.com

K8MU – Larry KozielK8MU – Larry KozielAA8UU – John TeagardenAA8UU – John Teagarden

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

ariss@arrl.org

Websites for more information:

www.ariss.org

www.arrl.org/ARISS

www.amsat.org