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Limaunion limaunion at fibertel.com.arOn 12/10/2012 07:41 PM, keenerd wrote: > Most significant is rtl_adsb, a fast and simple ADS-B decoder. It is > not the most sensitive decoder (Prog's and rtl-1090 pick up a few more > planes) but it works fairly well. Of course it lacks the interactive > maps of other software, however the output can be piped into fancier > programs or across the network with netcat. To use it, just run > "rtl_adsb". It does not need any options and can pick up plenty of > signals with only the stock antenna. Hi Keenerd & all, I'm doing some tests with ADS-B (i'm a newbie in this field so please be gentle) and am being able to receive messages like these: DF=11 CA=5 ICAO Address=acc3b4 PI=0x94804c Type Code=13 S.Type/Ant.=1 ---------- DF=11 CA=5 ICAO Address=aad3b4 PI=0x024745 Type Code=13 S.Type/Ant.=1 ---------- DF=15 CA=6 ICAO Address=a8d3b4 PI=0xa22339 Type Code=4 S.Type/Ant.=0 ---------- DF=11 CA=5 ICAO Address=a8d3b4 PI=0x3721a3 Type Code=b S.Type/Ant.=0 ---------- DF=11 CA=5 ICAO Address=a8d3b4 PI=0x2d3400 Type Code=b S.Type/Ant.=0 ---------- DF=11 CA=5 ICAO Address=a8d3b4 PI=0xbec907 Type Code=b S.Type/Ant.=0 I've been reading a little about the frame format from here http://www.radartutorial.eu/13.ssr/sr25.en.html (any other better source?). I don't know yet very well what's the meaning of DF=11, 10 or 15 but almost all of the messages have a value of 11. A couple of doubts: 1) from the output shown above, it seems that for some reason I'm not receiving the complete ADS-B 'data' frames, am I right? where's the altitude, latitude, etc? why that information is not displayed? 2) Is it possible to redirect the output to virtualradarserver? I tried to redirect it as it's suggested above (rtl_adbs -R | nc....), the status is 'Connected' and 'Total messages' was around 150 but 'Aircraft tracked' was 0 and nothing shown in the map. Should it work? do I need to use -R in rtl_adsb? in virtualradarserver the 'Data source' is set to 'basestations', is that right? should I try other software? Thanks in advance for any help/tips :) LU