Im new to the world of cb. I understand some of how things work but just a little. I drive a freightliner columbia daycab. Mirror mount 4' fiberglass no name antenna. 12' no name coax. Uniden bearcat 880, stoc mic. Im under 1.8 swr 1,20, and 40...however when i install my president richard with stock mic the swr is all over and sometimes showing over 20!!!. I am only using the internal swr meter in both radios.you can fine tune swr on bearcat but not sure you can on president richard..any help would be awesome.