Some years ago I had a (rather expensive) high-pass filter made to cut out OTA television channels < 25. Things were quite crowded around here and this was the only way to get some space for locally modulated video. With the coming re-arrangement and DTV transition the area above 52 should be very commonly available and I'm hoping that the obvious low-pass filter will be a stock item. Has anyone seen anything like this? I'm assuming they will eventually put something above 52 that will interfere so using no filter at all won't be a long-term plan.
On the subject of local modulation, I noticed a possible ATSC solution:
Dan Lanciani ddl@danlan.*com