Let's not get too hasty in removing the negative lead fuse. While rather unlikely, it is possible for the battery's chassis ground connection to fail. That could cause starter and/or load current to flow back to the transceiver and/or coax cable to ground. This issue has cropped up twice I am aware of. Once on a Nissan Titan pickup truck, and on a Toyota Tacoma. In both cases, the battery ground connection was compromised due to over tightening. I have a photo of the Titan, but can't find it. If I do, I'll post it.