Owen wrote:
Tom Donaly wrote:

Given a 396 meter length of Radio Shack RG58. At 250 kiloherz TLD says
(after some manipulation) that it has a propagation constant of
689.6 X 10^-9 + j7.933 X 10^-3. Zo is 50 -j4.344. Feed it with a


Doesn't that imply that the the matched line loss at 0.25MHz is
689.6E-9*20*e^1*100 dB/100m?

That is 0.0006dB/100m, it seems too good to be true!

Owen
Hi Owen,
It is too good to be true. (Just consider it came from an unusually
good batch.) The whole exercise is nonsensical, though,
because it results in negative power and a negative SWR. Increase the
loss to a more realistic value and the negative power goes away as
does the negative SWR while the absolute value of the reflection
coefficient is still greater than 1. I was hoping I could get some
kind of nut philosophical justification for negative average power
out of Cecil, but you sprang the trap.
73,
Tom Donaly, KA6RUH