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Hm, how would I do it. First of all' I think the time effort and expense far out ways the benefits . On a single mast the phase lines will be in the rf fields of the lower ants distorting the pattern..
I have seen it done at uhf with off set folded dipoles and the lines fed inside the mast offsets.On 27mhz this isn't practical.
HM........70ft wooden mast with a A99 up top..........
What I was thinking was making a co linear design instead, using the A99s as parts.,. maybe bottom A99 then a 1/2 phase section then another 1/2wave radiator then another phase section, then make top radiator from a gutted A99. or maybe make a coax co linear pulled up the mast and using an A99 as the top section.
Have to give it a bit more thought !

[QUOTE="vkrules, post: 551057, member: 24352"] Hm, how would I do it. First of all' I think the time effort and expense far out ways the benefits . On a single mast the phase lines will be in the rf fields of the lower ants distorting the pattern.. I have seen it done at uhf with off set folded dipoles and the lines fed inside the mast offsets.On 27mhz this isn't practical. HM........70ft wooden mast with a A99 up top.......... What I was thinking was making a co linear design instead, using the A99s as parts.,. maybe bottom A99 then a 1/2 phase section then another 1/2wave radiator then another phase section, then make top radiator from a gutted A99. or maybe make a coax co linear pulled up the mast and using an A99 as the top section. Have to give it a bit more thought ! [/QUOTE]

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