RadioBanter - View Single Post

wrote:
If you want the vurry
best 80m dipole, feed it with nuttin but coax.

Well, as a data point, Owen's transmission line loss
calculator says there's 0.362 dB loss in 100 ft. of
RG-213 feeding a 50 ohm antenna on 75m. The loss using
100 ft. of open-wire feedline feeding a 50 ohm antenna
on 75m is 0.169 dB, less than half the loss in the coax.
Even the Wireman #554 "450" ohm line is better than
the coax at 0.269 dB. Where are the losses in a Ladder-
Line fed system?
--
73, Cecil http://www.qsl.net/w5dxp