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Here you can find pre-recorded signals (sample data files). You can use these if you don't have a USRP or any other hardware available, or if you need signals you can't receive at your location.
Please add more!
NOAA-12 Weather Satellite
Date: Sun, 10 Dec 2006 12:11:55 +1030 From: Berndt Josef Wulf Subject: Re: [Discuss-gnuradio] APT signals To: email@example.com Organization: NTC-Electronics Sender: firstname.lastname@example.org G'day, I managed to capture the spectrum emitted by NOAA-12 for its entire pass; not quite sure anymore which one it was. Using a Diamond D130 discone antenna and a low noise broadband power amplifier (10-2000MHz, g=20dB, nf=3.5, po=+20dbm!!!) the signal was recorded utilizing the usrp_rx_cfile.py python script, a gain of 100, and decimation of 250 centered on 137.5MHz. It produced a very large file -rw-r--r-- 1 root wheel 1117519872 Dec 9 20:01 noaa-12.dat This a little more than 1GB!!!! and 419MB zipped. Do we have a place were it can be uploaded for other list members that are interested? My bandwidth isn't large enough to offer it to public from here. I was surprised how loud the signal was, considering the equipment used here, and how well the TVRX card performed. Now I'm really looking forward to shooting the big birds = geostationary satellites. BTW: Do we have an AFC block to compensate for doublershift or is this something we still need to implement? I looked through the documentation but failed to find anything there. cheerio Berndt