Just resurrecting this one. I have recently aquired a used radarbox, mainly it must be said for use on the road. I find when running it with the stock antenna that it only picks up aircraft within about 10 miles of me yet the sbs box I use for home use aquires aircraft at up to 40 miles. Swapping antenna between them makes no difference. Any tips on increasing the range on the side where I have good line of sight please?