HFU HF Underground
Technical Topics => Equipment => Topic started by: ChrisSmolinski on January 12, 2013, 2000 UTC
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My RTL SDR dongle arrived today, here are my first experiences with it: http://www.hfunderpants.com/?p=1220 (http://www.hfunderpants.com/?p=1220)
Maybe even Fansome will approve of this SDR.
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Last fall, I picked up a Newsky DVB-T (with the E4000 tuner).
It gets the job done and for its price, can't complain. Does seem like there's images all over the place with it, but could be overloaded by the GP-15 on the roof.
Have listened from the FM BC band up through 900 MHz. Not much to listen to on the 800 MHz around here since the large public safety system is APCO-25 and of the few services on FM 800MHz, they're trunked.
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My RTL SDR dongle arrived today, here are my first experiences with it: http://www.hfunderpants.com/?p=1220 (http://www.hfunderpants.com/?p=1220)
Maybe even Fansome will approve of this SDR.
Sorry Chris, no knobs on that thing. You know how Al loves knobs.
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Sorry Chris, no knobs on that thing. You know how Al loves knobs.
Good point. This should be more his style:
(http://www.hfunderpants.com/mypics/R820T_sdr_4.jpg)
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Short update - i've compiled rtl_tcp and dump1090 on osx as a console app, and have it displaying ADS-B aircraft transponders.
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Have dump1090 running as well on my MBP.
Now decoding the a/c. Although having only their ICAO address is not all that interesting.
Searching for one of them finds that A8B848 is N661DN, a Delta Airlines 757.
In watching his reported altitude, looks like he's arriving here at KMSP. Looked up arriving Delta 757s around this time and there's one from Los Angeles and one from Phoenix. Welcome to Minneapolis, enjoy the cold.
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Have dump1090 running as well on my MBP.
Now decoding the a/c. Although having only their ICAO address is not all that interesting.
Searching for one of them finds that A8B848 is N661DN, a Delta Airlines 757.
In watching his reported altitude, looks like he's arriving here at KMSP. Looked up arriving Delta 757s around this time and there's one from Los Angeles and one from Phoenix. Welcome to Minneapolis, enjoy the cold.
I've been running dump1090 in interactive mode --interactive where displays the received aircraft in a table that updates a few times a second. It keeps track of what ICAO codes have been heard, as well as other info, and eventually, if it gets enough packets, updates the aircraft's flight number, position, etc. I could have sworn adsbScope on Windows was displaying the tail number (presumably from the ICAO code via some database file) but perhaps I was imagining it.
Maybe I'll try to make a nicer cocoa app from dump1090. Any suggestions as to what you'd find useful?
I'm using a discone antenna, what are you using for an antenna?
Here's my misadventures in getting rtl-sdr built on the Mac: http://www.hfunderpants.com/?p=1236
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The ideal thing would be a map of the local area (zoomable) with live plotting of received aircraft and their track and an arrow of direction. Have them plot in some color (green?). When nothing is heard from an a/c in some amount of time, it turns yellow then a little bit later goes away. Some vertical tracking would be nice too. The aircraft icon could have the same data to look like an ATC radar.
Haven't looked at the other s/w packages and see what they have.
The antenna I was using was a little UHF stub that came with the radio. At the moment, have it stuck (magnetic) to my NC-183D in the basement (of a split level house, so about right at ground level). Also tried a horiz FM BC dipole which worked fine too. Not sure if one was better than the other.
Did notice a few aircraft coming into KMSP disappeared from my view under 7500'. But will have to watch that better.
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I ordered a cheap SDR off ebay, still waiting for it, its coming from China. I'll let you know the model when it comes in..
Was going to use it like another police scanner..