ariss

hidden oaks middle school makes historic contact with international space station!

24 April 2019 – ARISS contact supported by Greg N9CHA and his friends: John K0JDD, Russ WQ0N, Chris KC9NVV, Bruce N9BLU, Will J. and others shared in the excitement as 14 students asked questions of astronaut David Saint-Jacques aboard the International Space Station.

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Briefing Number One

A special adapter was manufactured by Bruce N9BLU to securely attach the G5400B azimuth rotor to the Mitchell plate on the Hercules tripod used for ARISS contacts. 

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Briefing Number Two

The tripod, mast and rotors are assembled into a working AzEl system to track the ISS.

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Briefing Number Three

The Rotors, Controller, Interface and Laptop are connected to complete the ISS auto tracking setup.

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Briefing Number Four

Using NOVA for Windows automatic antenna tracking software makes it easy to accurately track the International Space Station during an ARISS contact. The setup and use of the software is highlighted in this fourth briefing video.

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Briefing Number Five

The prime antenna for an ARISS contact is a directional, dual-polarized beam. The Cushcraft A148-20T is shown in this video. The selection criteria, modifications and installation are illustrated. This fifth video also demonstrates the azimuth and elevation rotation.

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Briefing Number Six

Operation of the main ARISS transceiver, the Kenwood TS-2000 is shown in this video. The effects of Doppler on both transmit and receive frequency is illustrated. Memory channels programmed in the “split” mode allow the dual VFO’s to be used. VFO A is set for the receive frequency, VFO B is used for the transmit frequency.

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Briefing Number Seven

The audio distribution method I’ve developed for ARISS contacts is explained. The components and how they are connected is featured.