Re: Calling the old BT technicians...
Sounds like the line is intermittently O/C to me. Perhaps related to conditions set up as queried in post #5? Of course, you would never know until the line was in use. Why not hang a spare analogue multimeter across it in a place where you can see it, or knock up a little hi-Z LED indicator to monitor the 48V d.c.?
__________________
Regds,
Russell W. B.
G4YLI.
|