This circuit was found in Radi Craft, January 1948. L1 has 4 turns of 24-inch wire in 1/16-inch form and L1 has 12 turns of 19-inch wire in the same form. L3 is equal to L2.

This circuit was found in Radi Craft, January 1948. L1 has 4 turns of 24-inch wire in 1/16-inch form and L1 has 12 turns of 19-inch wire in the same form. L3 is equal to L2.