Hello, I am working with an older Jawbreaker with current firmware (2015.07.2) and am seeing something odd. When I just run a simple source -> FFT in GRC the baseline of the noise floor is quite high (around -40db). When I take the antenna off it drops down to -90db. Tried several antennas with same results. I have tried the FM broadcast band, 440mhz and 915mhz. Typically when I see examples of the FFT in a demonstration or presentation the noise floor is in the -80/-90 range. I am using the default setting for the FFT and osmocom source blocks. Anyone have any ideas about this or have see this behavior before?
Thanks, Jay Jay Radcliffe Twitter: @jradcliffe02 E-Mail: [email protected] <https://mail.google.com/mail/?view=cm&fs=1&tf=1&[email protected]> LinkedIn + Resume: http://www.linkedin.com/in/jradcliffe02
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