[Discuss-gnuradio] phase coherence with LimeSDR

[Marcus D. Leech]

I managed to produce apparent phase-coherence with a LimeSDR with a 
gr-osmosdr-based app by using an external "reader" program, based on
  David Lonards work here:

https://groups.google.com/group/amateur-radio-interferometry/attach/6d20aa0e8fe35/limerec.py?part=0.2&view=1

I used the same setup, but have it reading both channels continuously, 
and feeding to the gr-osmosdr source file a pair of FIFOs using the "file="
  driver type.

This produced reasonable-quality fringing for an astronomical 
interferometer, whereas using the LimeSDR "direct" though gr-osmosdr 
produced no
  useful results (apparently random phase shifts over short timescales).