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thanks chain , basically i said the same thing freecell did.....
"eliminate any and all instances where MORE THAN ONE GROUND CONNECTION PATH exists"

LC , when you measured the swr with the filter in line was it before the filters place in line or after ? there should never be anything but coax between a meter and antenna when measuring swr . the input and output impedance of amps will affect swr also as will any component inline......even a swr meter/antennatuner . even coax can be incorrectly assembled or damaged and not show a short but have an incorrect impedance . coax impedance is affected by the distance of the center conductor and the outer shield and a damaged or cheap/incorrerectly manufactured section will never be right and can look perfectly new on the outside . i think sometimes that contribute to people saying a certian length of coax is necessary.......because the inital/other peices of coax tested to not show a short but the impedance in the coax itself it off/wrong .

also sometimes vehicles bodys arnt attached or built in a way that promotes a ground to the electrical system . sometimes even the roof doesnt have a ground to the rest of the vehicle and of course sometimes the roof isnt even metal so it cant make a ground .

<blockquote data-quote="BOOTY MONSTER" data-source="post: 112012">thanks chain , basically i said the same thing freecell did.....&quot;eliminate any and all instances where MORE THAN ONE GROUND CONNECTION PATH exists&quot;LC , when you measured the swr with the filter in line was it before the filters place in line or after ? there should never be anything but coax between a meter and antenna when measuring swr . the input and output impedance of amps will affect swr also as will any component inline......even a swr meter/antennatuner . even coax can be incorrectly assembled or damaged and not show a short but have an incorrect impedance . coax impedance is affected by the distance of the center conductor and the outer shield and a damaged or cheap/incorrerectly manufactured section will never be right and can look perfectly new on the outside . i think sometimes that contribute to people saying a certian length of coax is necessary.......because the inital/other peices of coax tested to not show a short but the impedance in the coax itself it off/wrong .also sometimes vehicles bodys arnt attached or built in a way that promotes a ground to the electrical system . sometimes even the roof doesnt have a ground to the rest of the vehicle and of course sometimes the roof isnt even metal so it cant make a ground .</blockquote>

[QUOTE="BOOTY MONSTER, post: 112012"] thanks chain , basically i said the same thing freecell did..... "eliminate any and all instances where MORE THAN ONE GROUND CONNECTION PATH exists" LC , when you measured the swr with the filter in line was it before the filters place in line or after ? there should never be anything but coax between a meter and antenna when measuring swr . the input and output impedance of amps will affect swr also as will any component inline......even a swr meter/antennatuner . even coax can be incorrectly assembled or damaged and not show a short but have an incorrect impedance . coax impedance is affected by the distance of the center conductor and the outer shield and a damaged or cheap/incorrerectly manufactured section will never be right and can look perfectly new on the outside . i think sometimes that contribute to people saying a certian length of coax is necessary.......because the inital/other peices of coax tested to not show a short but the impedance in the coax itself it off/wrong . also sometimes vehicles bodys arnt attached or built in a way that promotes a ground to the electrical system . sometimes even the roof doesnt have a ground to the rest of the vehicle and of course sometimes the roof isnt even metal so it cant make a ground . [/QUOTE]

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