In article <18899.35064.421120.677345 at
pkoning-laptop.equallogic.com>,
Paul Koning <Paul_Koning at Dell.com> writes:
inner conductor and outer jacket sizes) match.
Also, plain RG-8
doesn't have the 2.5 meter stripes, so you have to measure out
multiples of 2.5 meters for the transceiver placement.
What's the significance of the 2.5m interval?
It's some prime-number-fraction (17 IIRC but it's been a while) of the
wavelength of the data bits (and it's too late tonight to work it
out[1]) The idea is to ensure that the interference effects introduced
by the discontinuities of the taps are not additive.
[1] I've just got back to my room from the 25th anniversary dinner of
JANET, the Joint Academic NETwork which is sort of the UK equivalent of
Arpanet.
--
Pete Peter Turnbull
Network Manager
University of York