[TowerTalk] BN-86 Balun

[Roger (K8RI)]

On 5/19/2010 8:11 PM, K7LXC at aol.com wrote:
>
> In a message dated 5/19/2010 3:42:16 P.M. Pacific Daylight Time,
> towertalk-request at contesting.com writes:
>
>    
>>   I agree, the BN-86 is junk.  I fried one too on my  TH7
>>      
>
>      Ah, the infamous Fuse Balun. 1000 watts, ok -  1500 watts, the fuse
> blows
>
>    
You do have to take into account the ratings of this thing which might 
be tad optimistic.

1500W PEP, 800 Avg into < 2:1 SWR
ONLY 500W PEP <3:1
Digital/RTTY 500W @ <2:1

IOW it aint rated for much to begin with! Get near the band edges and 
it's only good for about 500 watts PEP.

They may not be pretty, but my TH-5 is getting a home grown current 
balun consisting of 4 turns of Davis BuryFlex, LMR-400, or RG-8X  
through 5 Fair-Rite 2.4" (#31 mix) cores for close to 5000 ohms of 
isolation.
(Thanks Jim)

73

Roger (K8RI)
> Cheers,
> Steve    K7LXC
>
>
>
>
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