Hi All, well I got my radarbox back from Airnav, I did a screen shot comparison from stock antenna to external antenna.
This really highlights the difference between the 2.
I will also post a screen shot with the LMR400 coax and another 20 feet of height as soon as i get my cable. At the moment the antenna is using cell foil cable, antenna is 4 feet from rooftop, elevation of 60mASL but with clear horizon view about 320 degrees.
Now I have the box back ill be feeding the radar box network