Looks like most channels are in the 40's. SNR is about 29 or 30. They all work, but occasional are lost or get pixelated. I have a rather poor cable set up with a lot of splitters. Should I spring for a signal booster/amplifier? Looking at a four port Motorola that seems to get good reviews I can put it in a outside box and energize it through an unused cable connection on the inside of the house.