The optimistic get_freq echo added in 0.23.5 (to stop the "Fake It" dial creep)
stopped JTDX/WSJT-X from going into transmit: the client reads frequency back
during its TX sequence, and echoing the commanded value instead of the rig's
live value interfered with it. No-TX is far worse than a 0.5 kHz drift, so revert
to reporting the rig's live frequency. get_freq/get_split_freq return s.rig.Freq()
again; the echo state, noteSetFreq, reportedFreq and the drift test are removed.