[Elecraft] 10/100 BaseT vs USB

Tue Jul 16 22:15:59 2002

On Tue, 16 Jul 2002, Bill Coleman wrote:

> Fooey. I've got unsheilded 100 BaseT cables running all over my house, 
> and I have yet to hear any RFI from that system. And they run a heck of a 
> lot faster than USB does.

     Heh, 10/100-BT cables are balanced feed twisted pair -- wired
correctly, they don't radiate much and can accept a lot of interference.  
Wired incorrectly and, well, even my 706 will hear the packets :).  I used
to take down a neighbor's network every time I keyed up -- turned out to
be a long, mis-wired net cable...  IIRC, USB is semi-balanced: the data
goes through push-pull, but much of the signaling is common mode.

--
Jessie Oberreuter
[email protected]
"He's a bit on edge, Mr. Johnston -- he hasn't slept since 1945."