I have a connex 3300hp that came with a 636L, when I switch over to the the D104 the static that I hear seems to go away and I can hear the locals alot better is this normal or is there a problem that needs to be adressed. use this radio as a base,rg213 coax, Imax2000 at 100ft at feed point, radio grounded,D104 is amplified.Thanks