Re: Topband: Ferrite Common Mode Chokes

2013-05-23 Thread Tom W8JI
I don't know what you are talking about Jim, are you talking about core internal resonance? If so, I'm not talking about that. Not quite.. A strong resistive component is present only around resonance, and the resonance of a single pass through a #31 or #43 core is in the range of 150 - 300 MH

Topband: Ferrite Common Mode Chokes

2013-05-22 Thread Jim Brown
On 5/21/2013 9:42 AM, Tom W8JI wrote: 31 materials has a Q of about 1 on 80 meters. This means a good part of the impedance is resistive. Not quite.. A strong resistive component is present only around resonance, and the resonance of a single pass through a #31 or #43 core is in the range of