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KG6BAJ > NWSGRP 29.09.09 03:22l 26 Lines 939 Bytes #999 (0) @ WW
BID : 12047_N1OES
Read: GUEST
Subj: Re: Open wire feedline
Path: DB0FHN<DB0MRW<DB0ERF<OK0NHD<OK0PHL<OK0PCC<OM0PBC<OK0PPL<DB0RES<ON0AR<
N9ZZK<KG6BAJ<KG6BAJ
Sent: 090928/1600Z @:KG6BAJ.#NCA.CA.USA.NOAM #:12047 [Grass Valley] InterGate $
** NEWSGROUP: rec.radio.amateur.antenna
** FROM : Cecil Moore <nospam@w5dxp.com>
Ron Walters wrote:
> #3 is the easiest but I am worried about open wire feed-line coiled,
> thoughts please!
Adjacent coils of parallel feedline should never be located
very close to each other. The minimum spacing should be a
few times the spacing between the wires.
What I do is use a dacron messenger line. For instance, if
a knot is tied in the dacron messenger line every two feet
and at each knot, the length of the parallel line is four
feet, a transmission spiral will result where 100 feet of
ladder-line can be spiraled into 50 linear feet of messenger
line. The ladder-line can be attached at the knots using
black nylon tie wraps. Hope this is understandable and helps.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com
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