More modern digital broadcasts are transmitted in what is known as the UHF band (Ultra High Frequency) between the range of 300 megahertz (MHz) and 3 gigahertz (GHz). The first reading, NM(dB) tells you how “clean” the signal is and the second one tells you how “strong” the signal is. ![]() If you have a rotor, create a list of optimal directions for each channel.Īn HDTV antenna signal is a radio frequency that is measured in noise margin decibels NM(dB), and power ratio in decibels-milliwatts or Pwr(dBm). Use your compass readings to calculate an average for optimal signal strength if you do not have a rotor and point your antenna in that direction.Continue this pattern (steps 4 and 5) for each channel recording each result.Use a compass to read the direction of the highest antenna signal and record the result.Slowly rotate your antenna 360 degrees and stop at the highest antenna signal strength (usually indicated by LEDs).Turn your antenna signal meter ON, and tune-in the lowest broadcast channel for your area.Connect your television to the socket on your antenna signal meter marked “TV”.Attach the antennas “F” connector to the socket on your antenna signal meter marked “Antenna”. ![]() Disconnect the antennas RG6 coaxial cable from your television or tuner.So how do you test your antenna signal? To test your antenna signal, follow these steps: To answer this question, “How to test your antenna signal”, it will be helpful to look at the different aspects that make up your antenna signal as well as those aspects that tend to diminish it. In this article we will focus on how to test your antenna signal strength, as well as look at some of the better TV signal strength meters readily available on Amazon.
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