I have a Davis VantageVue mounted on my Hazer a few feet from my Yagi. A kw out of that Yagi doesn't phase it in the least despite the close proximity. http://www.ae5x.com/blog/wp-content/uploads/2013/02/wx.jpg If I had it to do over again I'd buy another one. And no - no RFI to the K3. John AE5X http://www.ae5x.com/blog