[CQ-Contest] Common mode

WOODS, ERIC D PB EDWOODS at msg.pacbell.com
Thu Nov 2 16:07:28 EST 2000


I think that common mode refers to rf induced in the conductors in your
shack.  Common mode and longitudinal and "power influence" all relate to
voltages measured from a conductor to ground.  Differential mode or "circuit
noise" is measured between conductors in a twisted pair.

Eric, K6GV

> ----------
> From: 	Ed Sleight[SMTP:k4sb at mindspring.com]
> Reply To: 	k4sb at mindspring.com
> Sent: 	Thursday, November 02, 2000 2:19 PM
> To: 	cq-contest at contesting.com
> Subject: 	Re: [CQ-Contest] Common mode
> 
> 
> force12e wrote:
> > 
> > Can anyone point at some reference material for eliminating "common
> mode"
> > interference problems in a multi setup.  Need information about "brute
> > force" A.C. filters too.
> 
> Can't help you on the common mode stuff Natan, but I've been using the
> ICE brute force filters for years. They make models for 120 and 240 VAC.
> These filters are "brutes" in more ways than one! Heavily built with
> monster components. 
> 
> 73
> Ed
> 
> 
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