Guido, >>> It sounds strange, because to have 45,6 uH with 20 turns the Al should be 1140.
Thanks a lot. Sure I was wrong with inductance. For 20 turns: T-300A-2 AL=228, L=9.12uH T-300-2 AL=114, L=4.56uH To get same inductance on T-300-2 need to have 28T. But coupling will between primary and secondary will be changed. How much it critical ? Regards, Andy - YL2QN _________________ Topband Reflector Archives - http://www.contesting.com/_topband
