Thread: Coax + Ladder Line
View Single Post
  #16   Report Post  
Old June 12th 09, 11:43 PM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
external usenet poster
  
First recorded activity by RadioBanter: Dec 2006
Posts: 1,169
Default Coax + Ladder Line
wrote in
:

....
Even with a 80/1 mismatch, ladder line has low loss.

30m of Wireman 551 with a load of 5+j0 has VSWR=80 at the load end, VSWR=28
at the source end, and the transmission loss is 4.6dB... 65% of the input
power is converted to heat.

Speaks to your meaning of "low loss".

Mythical properties are ascribed to ladder line, some of attributable to
ARRL publications.

Owen
Reply With QuoteReply With Quote