View Single Post
  #9   Report Post  
Old January 5th 06, 08:59 PM posted to rec.radio.amateur.antenna
Owen Duffy
 
Posts: n/a
Default Stupid question on twin feedline (air)

On Thu, 05 Jan 2006 15:30:56 GMT, Cecil Moore wrote:

jawod wrote:

I will assume that balanced (air) feedline is homebrew. What
recommendations are there for spacing between the twin lines? Number of
spacers per foot? If homebrew, how to keep spacers from
migrating...will small wire "stays" modify feedline characteristics?


For all-HF-band operation with relatively high SWRs, the
spacing doesn't much matter. 2"-6" is a practical range.
Spacer spacing depends upon wind conditions. Two foot
spacing seems reasonable at my QTH. Some spacers pinch


Did you really mean two foot spacing. This imperial measurement system
can be a bit tricky sometimes.

the insulation on the feedline and thus stay in place.
Very small tie wraps could also be used.

--