Originally Posted by hjriver
I have a 4228 and it works great. I'm 47 miles from the nearest transmitters in Driver, VA. (Suffolk).
Take off the shield and increase your multi-path problems. That's the purpose to block the reflected signals. Considerable effort is put into the designs of antennas and to alter that just invites sub-par performance.
I'm currently in Cary NC, and am lurking here because we're moving to Richmond.
I have 2 attic mounted CM4228s. I'm 17 miles from the Raleigh towers, and 58 miles from the Greensboro towers. In my current location, all my locals but one are from the Raleigh towers, but PBS is about 25 miles away in the exact opposite direction (on the same compass coordinates as the Greensboro towers, just 30 miles closer) . Before I got interested in picking up Greensboro channels and installed the 2nd CM4228, I used to get PBS reliably off the back of my Raleigh pointed CM4228. I have an HTPC based setup, and dedicate some tuners to each antenna, so I've never played with a jointenna or similar.
I agree that taking the shield off is a bad idea. If you're going to take the shield off, you might as well just mount 6 normal bowtie antennas on some lumber.. It would probably be cheaper.