> On Jan 23, 2018, at 1:35 PM, Mark Kahrs via cctech <cct...@classiccmp.org> > wrote: > > A few notes: > ... > The vampire tap transceiver used RG-8 cable originally. That's before they > added the lines around the cable and added additional shielding.
The cable spec given in the Ethernet standard doesn't mention additional shielding. It does differ from RG-8 in that it calls for foam dielectric and a higher velocity factor (0.77 rather than 0.66). Another common difference (not required by the spec) is that RG-8 is polyethylene while Ethernet coax is usually PTFE. paul