wavey lines and static should not be possible with modern HDTV and digital over the air,
Wavey lines may be due to interference from a nearby rotating magnetic field (FAN) or from an MSW inverter,, Static is replaced by pixelation.
What I did to improve reception:
OEM: Batwing
Adeed: Wingman
The Wingman is a UHF director array, it simply hooks onto the body of the batwing, Tools needed
Ladder to access roof
Knife to open box
Optional pair of standard pliars (Slip joint work well) to remove rubber feet from bottom of batwing,, NOTE: fingers may be enough to do this job but slip a pair of pliers in your pocket before going topside.
This increses the range (on UHF) about 50%
Added: Sensro Pro (indoor module, switch/power supply and in this case more)
Improvement was very impressive....