If it is simply Mode S transmissions, then you will not receive GPS position data. With Mode S, you will get the ICAO code, Callsign information (Sometimes, if filled in), altitude, and Squawk Codes (Sometimes).
Virtual Radar
- Thread starter N0IU
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If it is simply Mode S transmissions, then you will not receive GPS position data. With Mode S, you will get the ICAO code, Callsign information (Sometimes, if filled in), altitude, and Squawk Codes (Sometimes).
Outside of individual ads-b servers how does Flightaware obtain live tracking on their site. I can see planes locations on the site that I cannot locate on my own station nearby. Are their different modes that they have access to??
Just now adventuring into adsb stuff so this may be a stupid question.
Just now adventuring into adsb stuff so this may be a stupid question.
eorange
♦RF Enabled Member♦
Other people contributing their ADS-B data probably have better receiving antennas than you. I thought I was doing OK until I decided to build a collinear antenna specifically for 1090 MHz, and then I realized I had no idea what I was missing. The number of planes I was able to track was easily triple.
OK. I need to do that I guess. But are their other modes other than ads-b that is accessible by other means to get location plots? Which antenna plan you use?
And Wargames was an awesome movie. Wardialer days
eorange
♦RF Enabled Member♦
Not that I know of. I only receive Mode-S / ADS-B on 1090 MHz.
Antenna plans: search youtube for "Making an inexpensive 1090MHz ADS-B collinear antenna" by nerdsville. That's the one I built and it works great.
WarGames: yes it was. I actually got to play with an IMSAI 8080 right around that same time as the movie.
I built a collinear antenna. However there are some different versions and even some forum arguments about what to do with the end. Did you connect the core and the shield? The version I built actually has 4 /12 inches of unshielded core at the end. That core ended up being connected to the shield at the plug end.
http://www.arrl.org/files/file/QST/This Month in QST/January 2014/VirtualRadarJan2013QST.pdf
eorange
♦RF Enabled Member♦
I did not connect the core and the shield on the far end. On the "feedline" end...I just jammed the 1st element into a length of RG6, which has a male F connector on the other end. Used a F to BNC adapter and that was it.
OK so I guess my question is does it matter what part of the antenna (core or shield) ends up as the middle, per say, of the feed line and into the dongle? I don't know antennas but I have always thought of the shield part as the ground.
eorange
♦RF Enabled Member♦
It doesn't matter in this case, because the shield in your feedline (for example) will alternate connecting through a center conductor, then shield, then c.c., as it progresses through your elements.
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