I have a 2007 Prius IV and just getting into HAM radio. Initially have installed a dual band (144/440 MHz) mag mount antenna in center of roof about 2 ft in front of the roof radio antenna. Using an iCOM T7H hand held radio running at 5w (using LiMH AA batteries and in-car cigarette lighter battery charger). So far so good. However........... 1. I hear static/noise on various channel in both bands but constant and not related to engine RPMs. 2. Talk/listen well on most channels and on repeater channels. 3. Now want to go up to quad band radio (10, 6 & 2 m and 440 MHz) and associated antenna. Have done a bunch of research but failed to find consensus of antenna and radio installation. So........ QUESTION: A. What experience have Prius/Ham folks had in installing/using hand held and mobile HAMs in Prius (mine is 2007)? B. What antenna options exist for a quad band radio? Where should I mount what type antenna? And any other suggestions and experience the HAM community has had in and with a Prius.