I have called and talked to a technician. He was unable to explain to me why I was receiving a code 771 for some channels and not other channels. The station I wanted had the code 771. I checked and there were stations I was receiving and other stations that I was not. I do not understand why I could get some channels and could not get others. To me it should be an all or nothing situation. Which if this were the case I would not be writing. Since I could get some and not others I want to know why. If I get a signal from the one and only that I receive from satellite, then I should have all channels. The technician DID NOT get the job done.