Gene Fuller wrote:
Try it.

I believe you will find that your equality requirement on angles reduces
to precisely the simple equation offer by Reg.

Exactly! That's why I wonder why Ramo and Whinnery said it's an approximation.

Wonder why Ramo and Whinnery say that's an approximation for low-loss
lines? If the R+jwL angle is equal to the G+jwC angle, doesn't that
make Z0 purely resistive?
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73, Cecil http://www.qsl.net/w5dxp