Topband: Common Mode Chokes

Jim Brown jim at
Mon Jun 10 01:32:08 EDT 2013

On 6/9/2013 6:57 PM, wb6rse1 at wrote:
> G3TXQ shows characteristics for common mode chokes

There's lots of measured data in the RFI tutorial on my website. A 16 
turn (x2) bifilar choke connected as parallel wire line  will work VERY 
well on 160-40M.   It will handle legal limit if the common mode voltage 
is fairly low at the point it is inserted. That is, if the antenna is 
reasonably well balanced.

73, Jim K9YC

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