I have been collecting signals in a lab environment using an N210 with a CBX card without any perceived issues. When running the uhd_fft script I am seeing an SNR of 20-30 dB, which is enough for me to do the post processing of the collected signals.
When I upgraded to the X310 with UBX40 cards I noticed a much higher noise floor and a decrease in SNR ~10dB. This decrease in SNR makes it unable for me to post process the signals. I am operating in Rx mode only. Does anyone have any thoughts as to what might be going on? Thank you Mark
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