Topband: BN-43-202 Cores / 2843000202

[Brian Moran]

Some folks have asked how these compare to type 73
material -- Type 73 material in this form has Al of
about 8500, and Type 43 material is about 2900. So,
for a given impedance, you'll need 3 times the number
of turns for a xfrmr based on type 43. If you look at
W8JI's website, less turns are better. So, type 73
material would be less loss. 

--- Brian Moran <brianmo at yahoo.com> wrote:

> It's that season -- time to wind beverage
> transformers, hang the K9AY Loop with care, and work
> some 160m DX!  
> 
> I have a large quantity of BN-43-202's, Fair-rite
> 2843000202, too many for my reasonable personal use.
> 
> These have been used widely for impedance
> transformation. $0.35 each plus postage, or FREE to
> non-US stations that make reasonable efforts to use
> them this season. 
> 
> Brian N9ADG
> 
> 
> 
> 
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