On Thu, 01 Feb 2018 14:46:46 +0000, T i m wrote:


I ran some Thin Ethernet in Heathrow T4 and they needed a specific
(Belden) cable (I think) that had a secondary foil screen because of
the high levels of RF / Radar that was about. Had I not used the
'right cable' I could easily say that 'Thin Ethernet sucked' when it
was clearly the result of the location. The fully loaded 8 port Thin
Ethernet repeater I installed at a previous job never had any issues
at all using standard RG-58C/U.


We had no end of intermittent problems with a repeater especially on
one or two segments.

Had to get specialists in, with fancy equipment and they were
scratching their heads. For some reason I happened to measure the
shielded earth to a socket earth - there were volts there!!

Yep the offices was two houses, joined together, the front being on
one transformer and phase and the back being on a different
transformer and phase with earth differences. Sparky redid the fuse
boxes/earths etc and no more problems. A long time ago but I don't
think the two supplies into one property was a permissable arrangement
for similar reasons to the problems we encountered.




--
AnthonyL