5 turns input 7 turns output
Used material: 1 core of 73 material Fair-Rite 2873000202
Input = 5 turns / Output = 7 turns
5 square = 25 / 7 square = 49
49 / 25 = 2
When Input impedance = 50 Ohms,
Output impedance wil be 2 x 50 Ohm = 100 Ohms
Optimization for 7 MHZ: 2 x 39 pF parallel.
Optimization for the entire frequency band with 39 pF:
Insertion loss for 2 devices:
Insertion loss @ 7 MHz = 0.25 / 2 = 0.12 dB