Topband: Mother of all ferrite common-mode coaxial chokes

donovanf at starpower.net donovanf at starpower.net
Fri Jul 13 21:36:16 PDT 2012


Paul,

I've used that installation method for at least 25 years, its easy to learn and it consistently produces excellent results.

73
Frank
W3LPL

---- Original message ----
>Date: Fri, 13 Jul 2012 13:27:07 -0400
>From: "Paul Christensen" <w9ac at arrl.net>  
>Subject: Re: Topband: Mother of all ferrite common-mode coaxial chokes  
>To: <topband at contesting.com>
>
>> "I've seen literally hundreds of improperly installed PL-259, type N and 
>> BNC
>connectors."
>
>I agree for the most part, but in the case of using "UG" reducers with a 
>PL-259, I believe there's a  better method over the "proper" procedure 
>supplied by Amphenol and the ARRL Handbook over the last several decades.
>
>http://www.w5fc.org/files/how-to/PL259.PDF
>
>It's a rare case, and in my initial review of the document, I was skeptical. 
>But after trying this method on several dozen RG-400 shack interconnect 
>cables, I'm convinced of the superiority of this method as it offers the 
>builder much greater quality control and work inspection.  The builder is 
>not left to guess about what's happening inside the connector when using a 
>reducer.  If the job isn't done right the first time, it's as easy as 
>spinning off the body and re-starting.  That cannot be easily done with the 
>"proper" method since it requires soldering the UG adpter into the four 
>holes of the PL-259 connector body.  Disassembly can be done, but with much 
>more work.  Of course, another alternative is to use crimped connectors and 
>avoid the reducer, but I don't like their use outdoors or on cables subject 
>to repeated handling at the connector.
>
>Paul, W9AC
>
>
>
>_______________________________________________
>UR RST IS ... ... ..9 QSB QSB - hw? BK


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