Re: Experimental Ethernet, XGP, etc.

2018-01-23 Thread Paul Koning via cctalk
> On Jan 23, 2018, at 4:17 PM, Glen Slick via cctalk > wrote: > > On Tue, Jan 23, 2018 at 11:15 AM, Paul Koning via cctalk > wrote: >> >> 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 >>

Re: Experimental Ethernet, XGP, etc.

2018-01-23 Thread Glen Slick via cctalk
On Tue, Jan 23, 2018 at 11:15 AM, Paul Koning via cctalk wrote: > > 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 differe

Re: Experimental Ethernet, XGP, etc.

2018-01-23 Thread Paul Koning via cctalk
> On Jan 23, 2018, at 1:35 PM, Mark Kahrs via cctech > 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 a

Re: Experimental Ethernet, XGP, etc.

2018-01-23 Thread Josh Dersch via cctalk
On Tue, Jan 23, 2018 at 10:35 AM, Mark Kahrs via cctech < cct...@classiccmp.org> wrote: > A few notes: > > The experimental Ethernet speed was in fact 2.94 MHz: It's the Alto clock > divided by 2. > > The Alto based printer was called "SLOT" -- Scanning Laser Output > Terminal. It was plugged int