0-20 MHz FFT with RTL-SDR USB radio

[2N5109]

Where can find software and/or hardwares for HF FFT real time spectrum anayzer 0-30 MHz with 1kHz resolution using inexpensive USB DTV receive tuner chips in USB dongle?  Does such thing exists?  Am retired now.  Need for use in FMCW radar home project.   
-2N5109

[borberk]

You can make or buy a upconverter which moves 0-30 MHz band to 100-130 MHz and use it with USB DVB-T SDR dongle. SDR# (SDRSharp) software is freeware.

[tanveerriaz]

chk this
http://blog.kf7lze.net/tag/up-converter/

[Catcatcat]

Look here may be useful Radio Spectrum Monitor

[Checksum8]

This one is really nice, but I don't know Linux

http://www.oz9aec.net/index.php/beaglebone/480-rtlizer

[LabVIEWguru]

Look here first:
http://sdr.osmocom.org/trac/wiki/rtl-sdr

Just follow the links from here - there are literally hundreds of pages.
Also, on Youtube there is/was a guy from Deutschland that had decoding software (for free) using RTL-SDR that you had to see to believe.
You can get these RTL dongles on ebay for (literally) just a few dollars.

I seem to remember the folks at DangerousPrototypes were doing a lot with these a couple of years ago.

I just checked ebay and there are 350 "hits" for "RTL-SDR." Most have the dongle, antenna, remote control and software in the $10 USD range.

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