**nRfMon - nano spectrum analyzer with the RFM12B transceiver module**

A software spectrum analyzer for the RFM12B transceiver module running in a JeeNode or an Arduino. Use this program to visualize what the '''RFM12B transceiver module''' "hears" in the 433, 868 or 915 MHz bands.

''nRfMon'' tries to visualize what's happening on the radio waves when transmitting and get an understanding of the physical qualities involved. Based on an idea that initiated in the http://talk.jeelabs.net/topic/385%|%JeeLabs forums%|%, a http://jeelabs.org/2010/06/27/rfm12b-as-spectrum-analyzer/%|%sample sketch%|% and https://github.com/jcw/jeelib%|%JeeLib%|%, it provides a '''basic spectrum analyzer''' with a '''waterfall display''' along with normal frequency and time domain displays of the signals, as they are heard by the very same RFM12B module employed in the board, and a Bit Error Rate (BER) and Packet Error Rate display with packet dicoding.

This tool is accompanied by a sketch, which must to be uploaded to the Jeenode or whatever Arduino or compatible board the RFM12B module under test is connected to. The source code can be found here: https://github.com/dzach/nrfmon . This project is also discussed in the JeeLabs forum thread http://jeelabs.net/boards/6/topics/715?r=740%|%nRfMon - RFM12B forensics%|%

Here is a snapshot of the main window:

[nRfMon screenshot]
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