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Re: [RFI] Re-wiring station

To: Chuck Gooden <Chuck.Gooden@comcast.net>
Subject: Re: [RFI] Re-wiring station
From: Robert Nobis <n7rjn@nobis.net>
Date: Fri, 30 Dec 2016 19:33:15 -0700
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Chuck,

I have never seen anything on number of turns. I simply wind as many as I can 
get in a given length of zip cord.

73,


Bob Nobis 
n7rjn@nobis.net


> On Dec 30, 2016, at 19:13, Chuck Gooden <Chuck.Gooden@comcast.net> wrote:
> 
> Bob,
> 
> 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@nobis.net <mailto:n7rjn@nobis.net>
>> 
>> 
>>> On Dec 30, 2016, at 14:29, Chuck Gooden <Chuck.Gooden@comcast.net 
>>> <mailto:Chuck.Gooden@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
>>> _______________________________________________
>>> RFI mailing list
>>> RFI@contesting.com <mailto:RFI@contesting.com>
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>> 
>> 
> 
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