Owen Duffy wrote:
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.

50 cm, then




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

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On Thu, 05 Jan 2006 19:48:55 -0500, Amos Keag
wrote:

Owen Duffy wrote:
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.

50 cm, then

Well Amos, I misunderstood the two foot spacing to be wire spacing
rather than spacer spacing. Both spacings are discussed in the space
of one paragraph, and it is a little open to misinterpretation. I
thought he may have meant wire spacing and two inches rather than
feet... hence the reference to the measurement system. Cecil did clear
it up.

BTW, two foot is closer to 60cm (60.96cm).

Owen
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