I mean two chokes, each with five turns, wound on the same coax. There
is a HUGE difference. Study k9yc.com/RFI-Ham.pdf, which includes a
tutorial on how ferrite chokes work.
The chokes in series keep the same resonant frequency (and the broad
resonant peak is the range where they work as chokes). Winding only one
choke on two cores lowers the resonant frequency by the square root of
2, because there's twice as much L. and Fr varies as the square root of
LC).
73, Jim K9YC
On Fri,4/14/2017 12:27 PM, Chuck Gooden wrote:
Jim,
Could you clarify if you mean 5 turns through each core as in separate
chokes in series. Or 5 turns through both cores as in 1 choke with
two cores? Or is there a difference? It doesn't seem like there would
be a difference.
Chuck K9LC
On 4/14/2017 1:33 PM, Jim Brown wrote:
The number of turns (and to to the extent that it affects
capacitance, wire size and spacing) sets the resonant frequency. The
Fair-Rite data is most likely for small diameter wire. If you want
the choke to be effective where 5 turns puts it, yes, two chokes in
series would be the way to get there.
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