[TowerTalk] One off balun question

[Steve Hunt]

Gerald,

I measured the choke resonant frequency using a 2-port VNA S21 measurement.

I then calculated what the choke series-equivalent resistance and 
inductance would be at that resonant frequency using a combination of 
Fair-Rite's u' and u'' figures, and a 2-turn impedance measurement.

Finally I calculated what the parallel capacitance would need to be to 
resonate that impedance at the measured frequency.

Steve G3TXQ



On 31/10/2014 16:30, TexasRF at aol.com wrote:
> Steve, is equivalent C something you measure or is it calculated?
> If measured, how do you do that? If calculated, how do you do that?
> Thanks,
> Gerald K5GW
>