Can someone please help.... I have a two SDS100's. One with a Diamond tri-band rubber ducky and the other with a Diamond D300N with LMR400. This is all new equipment. Just installed today. (The base antenna that is). My RSSI signals are stronerg with the rubber ducky then the base antenna. I only have a 50' run of cable. I have NO idea where to begin to start to troubleshoot. Thoughts? Ideas?