Thread View: comp.os.os2.networking.misc
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Started by Jim Backus
Thu, 18 Nov 1999 00:00
home networking - Qs re cables and hubs
Author: Jim Backus
Date: Thu, 18 Nov 1999 00:00
Date: Thu, 18 Nov 1999 00:00
37 lines
2438 bytes
2438 bytes
Two questions about home networking: Q1 What is the difference between coaxial cable designed for thin Ethernet and a general purpose RF coaxial cable such as RG58c/u or RG223? The background to the question is that in the UK suppliers charge significantly more for Ethernet cable than for good quality RG58 cable. I know from my background as an electronics engineer with principally RF experience that coax has a characteristic impedance dependent on the distributed inductance and capacitance of the cable and that the velocity of propagation is also dependent on these characteristics. The loss is dependent on frequency, cable size and the materials used in its construction. One other characteristic is the screening effectiveness which is dependent on the screen construction. Now Ethernet at 10 Mbps (cf RF at 10 MHz) seems a relatively undemanding application so why is Ethernet cable more expensive? Q2 Any comments on the proposal below? I currently have 3 PCs within a few feet of each other linked using coaxial cable running 10 Mbps Ethernet. I'm considering expanding this to support more PCs in different parts of my home. My intention was to use a number of 4 port hubs linked by coax with the PCs connected to the hubs using Cat 5 cable. BTW the coax I'm currently using is RG58 and it has given me no problems. TIA Jim Jim Backus OS/2 user because it's better bona fide replies to jimb(at)jita(dot)demon(dot)co(dot)uk http://www.jita.demon.co.uk
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