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NB when you bring a parasitic element near to the driven element mutual coupling changes the resonance & impedance of both elements,

i have never made an antenna model in my life, but i have made quads in the early 80's from wire & wood using a cb vswr meter & s-meter & lots of trial and error,

They worked as well or a little better than my tagra & lemm yagis on a 20ft pole,
not that its anything to brag about,
when i took the lemm down i found the instructions tucked inside the boom,
i had the director & reflector at the wrong end but it still worked.

[QUOTE="bob85, post: 579600, member: 18"] NB when you bring a parasitic element near to the driven element mutual coupling changes the resonance & impedance of both elements, i have never made an antenna model in my life, but i have made quads in the early 80's from wire & wood using a cb vswr meter & s-meter & lots of trial and error, They worked as well or a little better than my tagra & lemm yagis on a 20ft pole, not that its anything to brag about, when i took the lemm down i found the instructions tucked inside the boom, i had the director & reflector at the wrong end but it still worked. [/QUOTE]

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