1 antenni - kaksi radiota:
Receiving Splitters
Virtually all splitters are based on the Magic T with a matching transformer on the input. These splitters are certainly less than ideal, but they are simple and many times (but not always) better than a direct parallel connection.
T1 is a 7-turn transformer tapped at 5 turns (1.4:1 turns ratio, 2:1 impedance ratio) step-down transformer. 73 material binocular cores are ideal for 100kHZ to 30MHz applications.
The magic T transformer is 5 to 10 turns of twisted pair wire through a 73 material binocular core. Configured as a center-tapped winding.
R1 is twice the expected load impedance. For 50- ohm systems use a 100 ohm resistor.