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
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>>
>>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>>
>>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|