On Mon,10/12/2015 8:23 AM, Bill Hider wrote:
Use 9 TURNS on a core-stack of five (5) of P/N 2631803802 cores. That’s the
Mix #31 core.
Bill,
A 5-high stack of cores is only needed to handle high power. This is an
RX antenna, so suitable choking Z can be obtained with more turns on a
single core. See the measured data for 1-14 turns of small diameter wire
on #31, #43, #77, #78, and #61. #31 is the best material below 5 MHz.
73, Jim K9YC
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