Électricité de France HNZ
From Signal Identification Wiki
Electrical substation SCADA protocol used by EDF (Électricité de France). "HNZ" meaning unknown, may refer to the "HN Z 66-S-11" specification document.
8N1 transmitted over CCITT V23 at 600bps.
Many channels used in between 68.5MHz and 73.3MHz.
None currently known.