GQRXのフォーマットは32bit floatのペア(GNU Radioのcomplex)

cf32, pairs of 32-bit floats representing I and Q. GnuRadio’s file
source can read these directly.

Thanks for the quick reply. I tried to use sox to convert the files into
WAV files to read into other software and it worked fine:
sox -t raw -e floating-point -b 32 -c 2 -r 192000
./gqrx_20150812_193915_113821000_192000_fc.raw test.wav

GQRX raw IQ file format / structure? - GNU Radio - Ruby-Forum