Use this balun allways in combination with an 1:1 current balun!
Schematic diagram:
Used material: FT 240-43 Amidon
Primary (left):
2 coils with 5 turns = 10 turns.
Secundary (right):
2 coils with 5 turns and 2 coils with 2 turns = 14 turns.
Impedance primary (50 Ohms) is 10 x 10 = 100
Impedance secundary 14 x 14 = 196
Calculated impedance secundary = (50 Ohms/100) x 196 = 98 Ohms.
