[Elecraft] OT: Balanced Feedlines
Augie Hansen
augie.hansen at comcast.net
Thu Jul 16 20:54:50 EDT 2009
Don Rasmussen wrote:
> Can anyone suggest a compact balanced line that can handle 1000 watts? I like the size of that Radio Shack 300 ohm TV line, but 100 watts is likely the maximum. I'd like to build a stealthy KW antenna. The 20m dipole radiating elements are so low to the ground that 3:1 SWR is the best I can get. If I tune this out with a tuner, there will be too many db's of loss over the 100 feet of feed required. I assume a KW would melt the TV line. Any suggestions?
DX Engineering (and other sources) sell 300-ohm window line, which
easily handles 1KW. It is better for TX use than the RS stuff that is
primarily used for receiving applications. I have used the window line
for years for an 80-10 meter doublet without problems. When the line
gets wet minor retuning may be required, and loss is greater than that
of true open-wire feedline.
Gus Hansen
KB0YH
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