COLLINS BALUN 4:1
collins balun 4:1
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;