Channel Download Anomoly
 

I live in Kitchener, Ontario Canada N2M 3A4. I have an 18ft antenna. I have had success from the beginning with 3 cahnnels consistantly being recieved. I have continually scanned for add on channels on a regular basis with no luck untill I tried again the other day. It was about 9pm. It had been very foggy out that day and evening. To my delight I received 11 new channels which are now stored. Most came in very good. The next day I turned on the tv Only 2 new cannels came in so I adjusted the roar to receive one of the channels I really wanted. Now all the new channels no longer come in . What happened? How can I get them again?