I recently made a "deseret j-pole" dual band antenna for basic 2m and 70cm transmitting and receiving use. I have it on a large metal tube behind my house, connected through a 50 ohm pl-259 cable, and adapted to sma-female (the one required by my baofeng UV-5RA). here's the problem, when it is fully connected, it doesn't transmit or receive clearly (if at all). it receives best when not even connected, but when I hold the center prong right next to the center hole on the adaper, but never touch them. what's the problem? any help is appreciated.
here's a crude depiction of how I need to hold the cables for best connection
sorry if I'm unclear.