I've bought this antenna to check out. I've checked continuity between center pins 0.0 good. Shield 0.0 good. And center pin to shield infinite good. That's the roof mount system. Then I add the base and coil system. Whip to center pin 0.0 continuity good. Pl259 shield to whip 0.0 bad. And last pl259 center pin to outer shell/ pl259 shield 0.0 bad. Or at least in most setup. My question is : are these the same results everyone else is getting that has and use this antenna? Mount checks out perfect until antenna base, coil, and whip is used. Same results when installing just 1 piece of the antenna at a time. Starting from base up. Antenna mount and base connectors are pl259 and so 239 type. Thanks for your time, knowledge, and experiments. lol.