DC4JG's S Match built with a T225A 2 toroid and a variometer. DC4JG: The Drehko is a butterfly Drehko 20 to 200 pf and the L is a spherical variometer with 8 to 45 μH. The transformer is a T225A 2. The S Match Works great. I have tried many couplers see www.dc4jg.de but no one went as unproblematic as the S Match. I paint over with the little twist ko and the spherical variometer all bands 160 to 20 m, the Rest is not tried. But all in all, a good Coupler. The coupler is also very important on the feeder line Good symmetrical.
