be236 KOCO is listed as 2edge for the 25' height only and Tropo for 60' which may be the source of confusion. In essence there isn't a useful ridge to provide diffraction so he's only going to see tropospheric scatter:
http://www.tvfool.com/?option=com_wr...ALLTV%26n%3d28
I don't believe that any antenna will provide reliable reception of these stations at this site with reasonable antenna heights. As noted upthread, the stations are beyond the horizon.
If money were no object (as might be the case when constructing a CATV headend) then a tower could be built or a more favorable location (higher elevation) nearby selected. It's going to take hundreds of feet though.