When I turn the RF gain up higher than 50% I can hear my truck horn (Freightliner Cascadia) when I honk it, is this a grounding problem, what can I do?
Looks like I found the problem, I can just barely hear the engine when I rev it up through my speaker, I have to put my ear up close to do so, so I guess the only way to alleviate this is to connect the radio directly to the battery; correct?