Hi William,
Looked around a little. L15 appears to be Ferrite with initial
permeability between Fair-Rite 43 and 31.
Choke, Guanella, Balun Ferrite material used is US is often Fair-Rite 43
or 31.
John KN5L
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On 7/5/19 4:18 PM, k6whp wrote:
Anyone know what this is? Can anyone suggest a suitable replacement for this core in order to make a Guanella 4:1 current balun.
