![]() ![]() Distortion: Unwanted alteration of the original characteristics of the waveform of a signal that bears information.Interference: Modification of a signal in a disruptive way as it moves from the source to the receiver, e.g., adding an unwanted signal to a useful one.Signal path deviation: This refers to reducing the signal’s power and density from the transmitter to the receiver due to several factors.Specifically its ability to reject unwanted images mixed with the wanted signals. Image response rejection ratio (IMRR): A measure of a receiver’s performance.Carrier suppression: When the carrier level is reduced below what is required for extraction by the receiver. ![]() Phase noise: Refers to random fluctuations in the phases or timelines of a signal as it is being transmitted.Noise: This is an error or some undesirable electromagnetic interference that mixes with a useful signal so that they are transmitted together.You might run into certain terms when researching how to get the perfect signal: Poor signals have certain characteristics that are measurable using a TV signal strength meter. Most of these meters are reasonably portable and can be easily carried wherever you’re going.Ī booster or amplifier is recommended where the TV signal strength is low enough to where you’re (unreasonably) losing channels.Ī TV signal strength meter can help determine if you need a booster by identifying whether local reception is possible but is too weak without amplification. Maybe you’re constantly on the road and need to measure signal strength at several sites. The meter will identify those locations around your home with the strongest signal, thus helping you find optimal placement. If that’s the case, you may have never set up a TV antenna before. You’ll appreciate a TV signal strength meter even more when switching to an over-the-air (OTA) antenna from cable or satellite TV. ![]() ![]() Situations Where a Signal Meter Is Useful It refers to the amount of residual static in the signal that’s not associated with the actual content. The first measurement will tell you how “clean” the signal is. The strength of radio frequency signals (i.e., TV signals) is measured in terms of noise margin decibels (NM dB) and power ratio decibels-milliwatts (Pwr-dBm): It helps to adjust your TV antenna for the best reception while using a signal strength meter, and thus locating the strongest level while aligning the antenna. Your perceived crystal clear view on your TV might not be the best you can get, but you may not realize that. Without a TV signal strength meter, it’s impossible to tell if you’re getting perfect reception as you’ll be operating in the dark. The best viewing experience is attained when you maximize the signal strength and minimize modulation error and bit error. It’s the percentage of bit errors of all transmitted bits over the time interval under observation.
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