In the house I am using a 1/4 wave 6meter groundplane. In the vehicle I'm using a mag mount antenna behind another mag mount antenna. I cant find any info on using it in a mobile situation so I'm trying and learning. I have nodded the box a little. I had to ground the 3 rehostats, moved the power jack to the back and added a rf sensing cir to control the keying.That makes a surprising difference, what are you using for the second antenna?