Re: LF: Dummy-Load on LW

[DL4YHF@aol.com]

Hello Walter and group,

> DK8ND's email raises an interesting point. Can any of our German friends tell me why an impedance of 60 ohms was popular in Germany for some time but not anywhere else?
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 I think 60 Ohms was once popular because it was one quarter of the once widely used symmectric 240 Ohm systems. Easy to build baluns from 240 to 60 Ohms. I remember our old tube-equipped TV had such a balun. 
Next question.. why 240 Ohms for symmetric lines ? ..  possibly because of the folded dipole.

This may be only one -probably the wrong- explanation. Another may be the loss on a 60 Ohm cable at higher frequencies is a bit lower than in a 50 Ohm cable.


Regards,
 Wolf DL4YHF.