have a problem with my signal strength at 5 degrees east disappear strength of some transmitters so I go from 92% to 76% result no picture, no sound. When I make new channel search, I get channel strength of 92% again, but next day the problem may be the same again. I am running Pli Jade Image. Are there any apps that can maintain the signal? Or maybe other options? DB 600 - thank you in advance.