This is an indicator of a poor signal. Pixelation can be caused by weather conditions (thunderstorms), interference from nearby appliances or signal interference from other devices.
Not Having the Antenna in the Right Place
Repositioning the antenna is the best way to correct this type of interference. Placing it as high as possible will help avoid bounced signals. If you aren't able to install an outdoor or attic antenna, a window-mounted one might be your best bet.
The causes mostly come down to the basic idea that the signals reaching the device aren't strong enough. You may be too far from the broadcast location, or something physically blocks the signals. The antenna could be in a less-than-ideal place or facing the wrong direction.
Luckily, there is little chance of that, because Wi-Fi networks work on different frequencies than digital antennas. Digital TV antennas go up to a frequency of 693.25 MHz, according to Into Tomorrow. Wi-Fi routers, on the other hand, operate on 2.4 GHz or 5 GHz. That's a huge gap between frequencies.
Your antenna mount needs to be properly grounded for your antenna to function correctly. Without a solid ground, you're bound to get high SWR levels and extremely poor performance.
If you suffer from reception problems in the evening, this suggests that the signal getting to your television is not quite strong enough. Changes in the weather, temperature or atmospheric pressure can cause an already poor signal to break up or be lost.
Typically a good signal strength is between 60-65dBuV. You can check the nearest transmitters and signal strength available from your location using the MySwitch website. While decibels (dBuV) are used to measure the strength of a signal, CBER and VBER are common measures of signal quality often used by installers.
Clean only with mild soap and water. Use no solvents, alcohol, or cleaning fluids. Do not power wash any part of the base mount of head of the antenna.
This happens because of power fluctuations at the mains. Try switching off other appliances around the home and also moving devices like mobiles, cordless phones and baby monitors away from your TV, and see if this fixes the problem.
Wrapping aluminum foil around an antenna increases the antenna's conductivity and surface area. It will then boost the signal received by a television. That works perfectly. Because most antenna wires are thin, this method works.
A height of 120 feet or even higher will provide even more advantages for long-distance communications. To a distant receiving station, a transmitting antenna at 120 feet will provide the effect of approximately 8 to 10 times more transmitting power than the same antenna at 35 feet.
The antenna needs to be placed in the same position as the TV transmitter. Because most of the TV transmitter are horizontal polarized it would be best to start putting the antenna in a horizontal position. One For All antennas receive vertical as well as horizontal signals.
Position the antenna higher on the wall
However, this is just a general rule; the construction of your house, the orientation and position of the wall, and whatever is on the other side of the wall might actually cause worse reception if you mount the antenna high up.
Everything from elevators to poorly shielded TVs can create interference. When in doubt, move your router 5 to 6 feet away from other electronics.
Larger antennas have typically better performance than smaller ones. Gain/directivity is not available from a very small surface area. Know and understand your antenna radiation patterns. Point antennas gain towards users.
This interference may be caused by equipment in your home, such as hair dryers, sewing machines, electric drills, doorbell transformers, light switches, smartphone chargers, power supplies, computing devices, washing machines, clothes dryers, fluorescent lights, LED lights, or garage door openers.