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Re: LF: Dummy-Load on LW

To: [email protected]
Subject: Re: LF: Dummy-Load on LW
From: [email protected]
Date: Tue, 11 Nov 2003 17:07:21 EST
Reply-to: [email protected]
Sender: <[email protected]>
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?

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.

Wolf DL4YHF.

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