I have made this one
http://www.balundesigns.com/servlet/the-32/balun-designs-baluns-1-cln-1/Detail
73 Danny E73M
On Sun, 8 Jan 2012 15:01:38 -0600, dalej wrote:
> Which model were you trying to emulate?
>
> Dale, k9vuj
>
>
> On 08, Jan 2012, at 14:14, [email protected] 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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