[TowerTalk] HyGain BN style balun question.

[Joe Subich, W4TV]

> 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 at contesting.com 
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Charles Johnson
> Sent: Tuesday, August 22, 2006 4:21 PM
> To: Clint Talmadge
> Cc: towertalk at 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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