[RFI] Balun designs chokes

[dalej]

One of their models states of the core material:  

"Special mix toroid with custom designed permeability allows broad frequency coverage. Toroid is coated with epoxy coating for added durablity."  (durability was spelled wrong), shame....:).  

Don't know what this "special mix" is, but I have several Balun Designs baluns/choke and they work very well.  

Dale, k9vuj



On 08, Jan 2012, at 14:14, e73m at e73m.com wrote:

> Hello,
> 
>  did anyone measured balundesigns.com chokes. I have tried to make 
> replica with FT240-K core and wound as on pictures but simple S21 
> measurements shows poor response below 21MHz, nowhere near their 
> published charts.
> 
> It looks like their core is a bit different then then standard FT240-K 
> core as used in Comtek/DXengineering chokes.
> 
> 73 Danny E73M
> 
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