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All power readings using rx_power with a HackRF One results in "-inf" #100

Description

@OZ1SEJ

Whenever I try to make a power measurement using rx_power with my HackRF One, all the power readings in the resulting csv file read "-inf". Example:

$ rx_power -f 118M:137M:8k -g 50 -i 10 -e 1h airband.csv
Number of frequency hops: 7
Dongle bandwidth: 2714285Hz
Downsampling by: 1x
Cropping by: 0.00%
Total FFT bins: 3584
Logged FFT bins: 3584
FFT bin size: 5301.34Hz
Buffer size: 16384 bytes (3.02ms)
Reporting every 10 seconds
[INFO] [UHD] linux; GNU C++ version 11.2.0; Boost_107400; UHD_4.1.0.5-3
Using device Audio: device_id=0 origin=https://github.com/pothosware/SoapyAudio 
Found 1 channel(s) :
Channel 0 :
  Found 1 antenna(s): RX 
  Found 0 gain(s): 
  Found 1 frequencies: RF 
  Found 8 sample rates: 8000 16000 22050 32000 44100 48000 96000 192000 
  Found 0 bandwidths: 
[INFO] Using format CS16.
RtAudio pulse: Tuner gain set to 50.00 dB.
_NOT_ running realtime scheduling

gives the first lines of the resulting airband.csv file:

2022-11-07, 12:57:53, 118000000, 120714284, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 120714285, 123428569, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 123428570, 126142854, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 126142855, 128857139, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 128857140, 131571424, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 131571425, 134285709, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf
2022-11-07, 12:57:53, 134285710, 136999994, 84821.41, 64000, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf, -inf

The HackRF One works just fine with e.g Gqrx.

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