View Single Post
  #8   Report Post  
Old February 11th 10, 10:45 PM posted to rec.radio.amateur.antenna
K7ITM K7ITM is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 644
Default Transmission line stuff 5

On Feb 11, 8:02*am, phaedrus wrote:
I seem to recall that ladder/open-wire feeders are relatively high
impedance ~500 ohms. Is it possible to construct 50 ohm open wire
feeder and if so, what would the spacing be?

Thanks!


And something else for you to ponder: Coax is generally available
commercially at about 50 ohms and about 75 ohms, with a few lines at
about 95 ohms and some specials of other low impedances. What would
~500 ohm coax look like (assuming a straight center conductor, not a
helix)?

Cheers,
Tom