You were probably looking at the link below: http://www.repeater-builder.com/antenna/separation.html
Vertically, for 50 dB of isolation is roughly 100' at 40 Mhz per the sheet. Horizontally, it's 800' for 50 dB, 2500' for 60 dB and 8000' for 70 dB of isolation at 50 MHz per the sheet. Classic quote at the bottom of the RB page: "Yes, it would take a half-mile to get 60db at 6 meters, and twice that to get 6db more. This is why split-site low band repeaters with cross-links are common." Very 73s, AJ, K6LOR On Fri, Apr 3, 2009 at 8:41 AM, phrijjid <[email protected]> wrote: > i thought i "ran across" a page with isolation curves on it. > > i.e. isolation needed at given seperation and given frequencies. > > maybe just my imagination. > > i'm interested in isolation needed for 50watt tx output @ 53.45 with rx @ > 1.7mHz split > > thanks > chris > kb0wlf > > >
