Chasing Satellites with K7AGE

Here’s Randy, K7AGE chasing the AO-51 satellite in his back garden with an arrow antenna and a 5w handie.

This amateur radio satellite is just one of many that licensed amateur radio users can make use of to make short QSO’s with other radio amateurs. You can see the status of all OSCAR satellites here on the AMSAT web site.

SYRG is especially interested in the AO-27 satellite that was used to provide the first D-Star via Satellite contact between Michael, N3UC, FM-18 in Haymarket VA and Robin, AA4RC, EM-73 in Atlanta GA.

The Analogue repeater on-board satellite AO-27 is well suited for D-Star work. The radios were designed to pass 1200-19200 baud GMSK data like D-STAR does too.

This year, Andy -  2E0BLF will be investigating digital communications on D-STAR via satellites and in particular AO-27. If you would like to get involved or can help, please let us know.

Over the next few weeks we’ll be looking at making a satellite listening station from an arrow antenna and K7AGE’s bracket design that accomodates a handheld radio.

Why not have a go yourself with us? See the new Satellite discussion board.

Enjoy the video – to see all K7AGE’s videos check out his you tube channel.

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Satelite tracking system

Orbitron is a satellite tracking system for radio amateurs and observing purposes. It’s also used by weather professionals, satellite communication users, astronomers, UFO hobbyist and even astrologers.

The first artificial satellite was put in the space on October 4, 1957 by the Russians. It was named Sputnik 1, and spent 92 days in Earth orbit. Since then man has launched thousands of rockets, and put thousands of satellites in orbit. There are more than 8000 objects in orbit now, including operational, non-operational, rocket bodies, and debris. They are orbiting at an altitude from 150, up to several thousands kilometres. For more than ten years people have been able to track satellites on a computer using satellite tracking software like Orbitron.

Orbitron shows the positions of satellites at any given moment, in real or simulated time. It’s FREE and it’s probably one of the easiest and most powerful satellite trackers, according to opinions of thousands of users from all over the world. Orbitron comes with many features of which some are listed below…

* NORAD SGP4/SDP4 prediction models
* 20 000 satellites can be loaded from TLE file(s) (auto: PC/Unix, 2/3 line)
* ALL satellites can be tracked at the same time
* Sun and Moon tracking
* Full-screen, presentation modes
* Supported screen resolutions from 640×480
* Real-time mode / Simulation mode (free time control)
* Advanced passes & Iridium flares search engine (results printing)
* Nightlife (dark color-scheme for night usage)
* Orbit info
* Radar
* Database of satellite frequencies
* Rotor/radio control (built-in or user’s driver support)
* and many, many, more…

This is the program used by members of SYRG to track the ISS when it is transmitting data and also for tracking AO-51. There are thousands of satellites out there and many we as amateurs can talk or send data too. Orbitron also shows you uplink and downlink frequencies needed as well as the ability to forecast the next pass for each satellite.
This software not only tracks satellites, at any given time it will also show you if they are out of control and therefore not in use or what there uplink and down link frequencies are making contact far easier… for anyone having any problems setting up Orbitron help can be found on the orbitron forum or you can ask Ian – M6DER in the SYRG forum

Orbitron can be downloaded from http://www.stoff.pl/

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