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Re: [TowerTalk] HyGain BN style balun question.

To: "Joe Subich, W4TV" <w4tv@subich.com>
Subject: Re: [TowerTalk] HyGain BN style balun question.
From: Joe Giacobello <k2xx@swva.net>
Reply-to: k2xx@swva.net
Date: Tue, 22 Aug 2006 19:46:48 -0400
List-post: <mailto:towertalk@contesting.com>
For some reason, I thought this was true too, but I was mistakenly 
confusing BN-86 with a Telrex balun.  The BN-86 is as Joe describes.

73, Joe
K2XX

Joe Subich, W4TV wrote:
>> The BN-86 and BN-4000 baluns are simply a piece of coax with 
>> the center going to one attachment point and the shield to the 
>> other. 
>>     
>
> Not true.  The BN-86 is a voltage balun (three windings on a ferrite
> rod).  The BN-4000 is the newer design "current" balun (ferrite beads 
> on coax).
>
> 73, 
>
>    ... Joe, W4TV 
>  
>  
>
>  
>
>   
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com 
>> [mailto:towertalk-bounces@contesting.com] On Behalf Of Charles Johnson
>> Sent: Tuesday, August 22, 2006 4:21 PM
>> To: Clint Talmadge
>> Cc: towertalk@contesting.com
>> Subject: Re: [TowerTalk] HyGain BN style balun question.
>>
>>
>> The BN-86 and BN-4000 baluns are simply a piece of coax with 
>> the center 
>> going to one attachment point and the shield to the other. It should 
>> show infinite resistance between the two attachment points 
>> and between 
>> the coax center conductor and the coax shell. It should show zero 
>> resistance from the coax center to one of the attachment points and 
>> likewise, zero resistance from the coax shell to the other attachment 
>> point. My BN-4000 was faulty in manufacture (shorted coax center to 
>> shield) and I disassembled it after Hy-Gain refused to 
>> replace it with a 
>> new one because I had waited over a year to actually put it into use 
>> after buying it as part of a tower project. I replaced it with a 1:1 
>> balun from DXEngineering. Much better quality product.
>>
>> 73, Charles, K4ZRJ
>>
>> Clint Talmadge wrote:
>>     
>>> It thought the HyGain Balun is supposed to be a current 
>>>       
>> balun, which to my understanding is just ferrite beads on 
>> coax.  If this were true, the balun would show no resistance 
>> from the center pin of the connector to one attachment point 
>> and infinite resistance to the other.
>>     
>>> Not so....  No resistance from/to any of the 4 accessible 
>>>       
>> points (two element attachment points, center pin of 
>> connector and outer shell of connector).
>>     
>>> Has anyone ever had one of these apart and could explain 
>>>       
>> the configuration ?
>>     
>>> I need this information because in my use of the balun, it 
>>>       
>> makes a difference which side is center conductor and which 
>> side is shield.
>>     
>>> Clint - W5CPT
>>> _______________________________________________
>>>
>>>
>>>
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>>>   
>>>       
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>>
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>>
>>     
>
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