Hector here is the information you requested. The coax wound chokes are
self resonant in the measurements and in my opinion will be detuned by
attaching coax feed lines and proximity to the boom of an antenna. Also
they are not very good for multi band antennas. It is possible to make far
better multiband chokes using ferrite type 31. Lots of info on K9YC web
page. I have built and measured a number of them and they work great.
http://www.k1ttt.net/technote/airbalun.html
73, Dan, N5AR
On Tue, Nov 12, 2013 at 3:14 PM, Herb Schoenbohm <herbs@vitelcom.net> wrote:
> Hector, Go to the W8JI.com website where Tom has the detailed performance
> done on the various types of coax chokes and how the stack up with voltage
> and current baluns.
>
> 73
>
>
> Herb Schoenbohm, KV4FZ
>
>
>
>
>
> On 11/12/2013 7:02 PM, Hector Garcia,XE2K wrote:
>
>> Hi TT
>>
>> I will like to know what is the best coaxial cable to make coax chokes
>> and get the maximum impedance or
>> choking effect , I'm talking from:
>> hard lines , double shield , LRM's, RG-142, RG-8, RG-213 using only
>> the COIL not ferrites or comparison between them or in what
>> bands works each one , if there is the information tested and measured
>> with lab equipment will like
>> to know.
>> Thank you in advance
>> J.Hector Garcia XE2K / AD6D
>> Mexicali B.C DM22fp / El Centro
>> P.O.Box 73
>> El Centro CA 92244-0073
>> http://xe2k.net
>> Tweeter @XE2K
>> _______________________________________________
>>
>>
>>
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>
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--
Dan Hearn
N5AR
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