What is Digital TV? (with pictures)

Digital TV is a standard of broadcasting that involves the use of digital signals instead of the analog signals, traditionally used with television broadcasts. Though there is some confusion on the topic, the presence of a digital signal does not mean there is high definition television. The two are very distinct. Digital signals do make…

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Free Digital Broadcast Television Reception: a How-To Guide

Free Digital Broadcast Television Reception: a How-To Guide

Introduction: Free Digital Broadcast Television Reception: a How-To Guide Digital Broadcast Television: It’s free, it’s clean and sharp -and the wave of the future!  Cut the pay-cable cord and save megabucks!So far, I’m getting 104 channels of perfect digital reception, which is not uncommon for a major metropolitan area.Those cable TV providers can hawk their…

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Electromagnetic Spectrum

Electromagnetic Spectrum

As it was explained in the Introductory Article on the Electromagnetic Spectrum, electromagnetic radiation can be described as a stream of photons, each traveling in a wave-like pattern, carrying energy and moving at the speed of light. In that section, it was pointed out that the only difference between radio waves, visible light and gamma…

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Emergency Alert System

MEMA’s Guide to the National Weather Service Watches, Advisories and Warnings   WATCH – designates the possibility that a weather event may occur. A WATCH is typically issued first, informing citizens there is a possibility that a significant weather event could occur. Citizens are encouraged to stay informed and be ready to act. ADVISORY –…

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What Are HEVC and AVC? H

What Are HEVC and AVC? H

(Image credit: Shutterstock)Who doesn’t love 4K? With a whopping 8.3 million pixels, a 3840 x 2160 resolution is quite the luxury these days. With a 4K monitor or TV, movies and games look impeccably sharp and detailed. But that’s assuming your content is actually being delivered in 4K resolution. If you own a 4K game or…

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Electromagnetic Spectrum

 Calculate frequency or photon energy, identify the three physical properties of electromagnetic waves The electromagnetic spectrum includes common regimes such as ultraviolet, visible, microwave, and radio waves. Electromagnetic waves are typically described by any of the following three physical properties: frequency (f), wavelength (λ), or intensity (I). Light quanta are typically described by frequency (f),…

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What Is HEVC H

What Is HEVC H

4K is the next big thing in TVs, and 4K videos are starting to pop up everywhere. But 4K video takes up a ton of space, which makes it hard to download and stream in the best quality possible. Thankfully, one technology is changing that, and it’s known as High Efficiency Video Coding (HEVC), or…

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Emergency Alert System (EAS)

Emergency Alert System (EAS)

The Emergency Alert System is a national public warning system commonly used by state and local authorities to deliver important emergency information, such as weather and AMBER alerts, to affected communities over television and radio.  Emergency Alert System participants – radio and television broadcasters, cable systems, satellite radio and television providers, and wireline video providers…

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Emergency Alerts

When emergencies strike, public safety officials use timely and reliable systems to alert you. This page describes different warning alerts you can get and how to get them.Wireless Emergency AlertsWireless Emergency Alerts (WEAs) are just one of the ways public safety officials can quickly and effectively alert the public to serious emergencies. They are sent through…

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