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eddie,
there are best and worst case scenarios for mast/feedline length and it reverses depending on the mast been grounded or not, i know im repeating myself but thats how antennas work,

clearly the guys who are suffering terrible rfi benefit most from isolation and those who pic a lucky length benefit least or not at all,

mm2000 did the work himself, i gave him the sirio radials and some suggestions,
he does have a correctly sized choke at the feedpoint isolation and spiderplane radials as does gary bowler on his imax,

doing it like we have shown has worked as claimed for several locals on 1/2wave and 5/8wave fiberglass or aluminum no radial endfeds,

your models above show exactly whats going on with mast/feedline currents,

i think the j-pole guy with his 3 way junction sums it up pretty well in laymens terms.

<blockquote data-quote="bob85" data-source="post: 359834" data-attributes="member: 18">eddie,there are best and worst case scenarios for mast/feedline length and it&nbsp; reverses depending on the mast been grounded or not, i know im repeating&nbsp; myself but thats how antennas work,clearly the guys who are suffering terrible rfi benefit most from&nbsp; isolation and those who pic a lucky length benefit least or not at all,mm2000 did the work himself, i gave him the sirio radials and some suggestions, he does have a correctly sized choke at the feedpoint isolation and spiderplane radials as does gary bowler on his imax,doing it like we have shown has worked as claimed for several locals on 1/2wave and 5/8wave fiberglass or aluminum no radial endfeds,your models above show exactly whats going on with mast/feedline currents,&nbsp;i think the j-pole guy with his 3 way junction sums it up pretty well in laymens terms.</blockquote>

[QUOTE="bob85, post: 359834, member: 18"] eddie, there are best and worst case scenarios for mast/feedline length and it reverses depending on the mast been grounded or not, i know im repeating myself but thats how antennas work, clearly the guys who are suffering terrible rfi benefit most from isolation and those who pic a lucky length benefit least or not at all, mm2000 did the work himself, i gave him the sirio radials and some suggestions, he does have a correctly sized choke at the feedpoint isolation and spiderplane radials as does gary bowler on his imax, doing it like we have shown has worked as claimed for several locals on 1/2wave and 5/8wave fiberglass or aluminum no radial endfeds, your models above show exactly whats going on with mast/feedline currents, i think the j-pole guy with his 3 way junction sums it up pretty well in laymens terms. [/QUOTE]

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