What does signal strength show when the picture is good and bad? . How many Tv's connected? . What is the connection set up now? . The signal strengths are very strong at 61 and 71 NM(dB) . . 0 NM (dB) is the reference point for trouble free reception. . Check the coaxial cable connectors , look inside the connector and see if the foil shied or shield wires are pushed in toward the center wire conductor , if so push the shield and wires away from the center conductor. . Also a good idea to clean the foam that is in between the outer foil shield/shield wires and center wire conductor. I do it with a small flat blade screw driver and blow it out . Also make a DIRECT coax connection to One Tv or converter box and Unplug All Other Electronic And Electric Devices so as to eliminate sources of interference. . Many people stack and jam electronic and electric devices including computers. . This is not the thing to do with Digital Tv. . One person wrote in that when the computer was on , some Tv channels were lost and when the computer was off the Tv channels were Ok. Also go to
http://www.dtv.gov , and read and watch the video about Double Rescanning . . Please contact us back we all like to know how it's going. O and also it might help to turn the antenna a little , the reason is multipath/signal reflections off of buildings , hills/mountains or even trees , turning the antenna a little will move the receiving elements of the antenna so the reflected signal is not so strong.