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COLLINS BALUN 4:1

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collins  balun 4:1

collins balun 4:1

 

collins balun 4:1 (simple view)

the same as above but with only 1 turn (just to understand schemtic)

It's the same collins balun 1:1 followed by a balanced-balanced transformer with ratio 4:1; 
the first part (the 1:1 balun) is made with 130+130 cm of coax cable (see collins balun 1:1 in the previous page); for the second part (the 4:1 transformer) use  4 x 130 cm of coax cable;

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