Plot IQ signals from Airspy HF+

Let’s see if I can receive the IQ signals correctly with my Python program.

A weak CW signal is fed into Airspy HF+.

user1@Asrock ~ % airspyhf_rx -z -d -r stdout -f 7.025 -m on > iq.bin
user1@Asrock ~ % python3 airspyhf.py

There is a DC offset, but looks reasonable.