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Re: [TowerTalk] 22 ohms to 50 Ohms balun material

To: Tower Talk List <>
Subject: Re: [TowerTalk] 22 ohms to 50 Ohms balun material
From: kd4e <>
Date: Mon, 07 Aug 2006 22:33:41 +0800
List-post: <>
>> what type of ferrite material is needed to construct thisa type 
>> of balun? 
> For a balun of this type, what matters most is LOSS, not 
> permeability. I would use a Fair-Rite #61 material, which has the 
> lowest loss of any good material I know of. This is the material 
> commonly sold in the ham market as FT240-61. For high power, I would 
> use at least two of them, as is done in the TenTec 229 and 238 
> tuners. Done this way, you'll get more flux for the same number of 
> turns, and the heat will be divided between the two of them. 
> Jim Brown K9YC

What would you use in a 6M application, please?

Same material?


Thanks! & 73,
doc, KD4E
... somewhere in FL

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