[Amps] 160M PI network Toroidal Coil

[peter chadwick]

Manfred, 

The numbers I've seen for flux density suggest that at 160m, you should be at no more than 100 gauss or 10 mT for reasonable losses and linearity.......and preferably a bit less.

So even if you cool the toroid, I'm still a bit doubtful about linearity. Plus there's the temperature coefficient to consider, too. Fortunately, dust iron has a fairly high Curie temperature, but that needs to be given some consideration - I suspect Amidon don't have a figure for it.

For some reason, I've never been a big fan of toroidal dust iron inductors....

73

Peter G3RZP