Hi

I recently installed an antenna to my rooftop, purchased an A/B switch from the source so I can still view my cable channels along with my HD channels through the antenna. I scanned and picked up 23 channels which I was happy with and I still had my cable channels. However the next day I lost some cable channels, I still have all the HD channels from the antenna but some have disappeared from the cable.

Does anyone have any idea why. Is it due to channel leakage?