[CQ-Contest] Inter-station interference

Barry Kutner w2up at mindspring.com
Thu Aug 31 20:56:02 EDT 2000

Maybe K3LR can answer. According to N2NT, Tim removed all the 
ferrites to descrease the noise.

On 31 Aug 00, Bill Coleman wrote:

> On 8/31/00 11:55 AM, Barry Kutner at w2up at mindspring.com wrote:
> >Andy mentioned 
> >that K3LR found that ferrite baluns on antennas actually increase 
> >broadband hash noise, and after removing them, there was less 
> >interference between stations. Two questions:
> >1. Has anyone else verified this?
> >2. Is a Hygain BN4000 a ferrite balun?
> Huh?
> In the November 1998 issue of CQ Contest, K3LR wrote an article about a 
> 3-high remote stack switch.
> Tim talks about using current chokes on all his antenna feedpoints, 
> another choke at the remote antenna switching box, and a third where the 
> feedline goes into the wattmeter at the shack. These chokes serve to 
> isolate the sheild of the feedline.
> His comment, "It is amazing what the installation of these 
> high-performance chokes has done to decrease interference and noise 
> issues at my multi-multi contest station."
> Tim used a W0IYH design, which certainly uses Ferrite beads.
> Has Tim changed his mind?
> Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at atlnet.com
> Quote: "Boot, you transistorized tormentor! Boot!"
>             -- Archibald Asparagus, VeggieTales

Barry Kutner, W2UP              Internet: w2up at mindspring.com
Newtown, PA         FRC         alternate: barry at w2up.wells.com

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