I do not know what your problem is - rx_power works Ok with the LimeSDR Mini -
rx_power -f 118M:137M:8k -g 50 -i 10 -d driver=lime -e 1m airband.csv
start0
[WARNING] SoapySSDPEndpoint failed join group udp://[ff02::c]:1900 on en2
setsockopt(IPV6_MULTICAST_IF, 2600:8801:8504:1900:1480:b2ff:9193:afcc) [49: Can’t assign requested address]
[WARNING] SoapySSDPEndpoint failed join group udp://[ff02::c]:1900 on en2
setsockopt(IPV6_MULTICAST_IF, 2600:8801:8504:1900:1962:25fb:4f73:81c3) [49: Can’t assign requested address]
length0 1
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] Make connection: ‘LimeSDR Mini [USB 2.0] 1D40E98019939A’
[INFO] Reference clock 40.00 MHz
[INFO] Device name: LimeSDR-Mini
[INFO] Reference: 40 MHz
[INFO] LMS7002M register cache: Disabled
Using device LimeSDR-Mini: boardSerialNumber=0x1d40e98019939a firmwareVersion=6 gatewareVersion=1.30 hardwareVersion=2 protocolVersion=1
Found 1 channel(s) :
Channel 0 :
Found 5 antenna(s): NONE LNAH LNAL_NC LNAW Auto
Found 3 gain(s): TIA LNA PGA
Found 2 frequencies: RF BB
Found 63 sample rates: 100000 500000 1000000 1500000 2000000 2500000 3000000 3500000 4000000 4500000 5000000 5500000 6000000 6500000 7000000 7500000 8000000 8500000 9000000 9500000 10000000 10500000 11000000 11500000 12000000 12500000 13000000 13500000 14000000 14500000 15000000 15500000 16000000 16500000 17000000 17500000 18000000 18500000 19000000 19500000 20000000 20500000 21000000 21500000 22000000 22500000 23000000 23500000 24000000 24500000 25000000 25500000 26000000 26500000 27000000 27500000 28000000 28500000 29000000 29500000 30000000 30500000 30720000
…