[RFI] Re-wiring station

Chuck Gooden Chuck.Gooden at comcast.net
Fri Dec 30 21:13:07 EST 2016


Thanks for the info.   I did read K9YC documents which I found quite 
informative but the question on how many turns really was not 
specified.  I was hope someone could point to a study that might relate 
the number of twist to effectiveness at different frequencies or 
conditions.  I searched google but have found one yet, but I do know 
twisted pairs work very well.  It is interesting to note that each pair 
of wires in a CAT5/6 ethernet cable has a different number of turns to 
prevent cross talk between pairs.  Therefore some one must of figured 
this out.

Chuck Gooden

On 12/30/2016 4:01 PM, Robert Nobis wrote:
> Hi Chuck,
> Using twisted pairs is always a good idea. You might wish to review 
> the tutorial written by Jim Brown (K9YC). http://k9yc.com/RFI-Ham.pdf
> 73,
> Bob Nobis
> n7rjn at nobis.net <mailto:n7rjn at nobis.net>
>> On Dec 30, 2016, at 14:29, Chuck Gooden <Chuck.Gooden at comcast.net 
>> <mailto:Chuck.Gooden at comcast.net>> wrote:
>> Currently getting back into ham radio and re-wiring my station.  I 
>> would like to eliminate as many spurious signals as possible.  Does 
>> it make sense to put the red and black zip cord used for DC power 
>> feeds in a drill to twist it to reduce and cross talk and coupling of 
>> stray signals?  If so how do you determine the number of twist per 
>> foot for effective results?
>> Chuck Gooden
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