What is DTMB terrestrial digital TV? Can you watch TV for free? do you know?

With the popularity of terrestrial digital TV programs, many cities have successively opened digital terrestrial TV signals, and more and more viewers are receiving them. However, many rice fans do not know whether DTMB terrestrial digital TV has been activated in their local area, let alone the transmitted terrestrial digital TV program content. Today I will teach you how to know whether digital terrestrial TV signals have been activated in their local area. Method.

1. Development history:

I have always heard that this DTMB can accept TV signals to watch TV for free, but how can we receive digital terrestrial TV signals? First of all, you must first know whether the TV transmitting station (or transmitting tower) in your area (city) has started broadcasting Terrestrial digital television programs. my country's terrestrial digital signal transmission standard was officially released at the end of 2007, referred to as the digital national standard terrestrial television standard, or DMB-T/H or DTMB in English. This standard was first launched in the 7 cities hosting the 2008 Beijing Olympic Games: Beijing, Qingdao, Qinhuangdao, Hong Kong, and Shanghai, Guangzhou, and Shenzhen, broadcasting high-definition signals for the entire Beijing Olympic Games. So far, many cities in China are gradually broadcasting digital terrestrial TV. According to domestic unified standards, currently broadcast analog signal programs will be gradually shut down before 2020.

2. Equipment composition:

Ground receiving equipment includes: receiving antenna (UHF antenna), signal line, mobile TV receiver, UHF signal amplifier (note: this must be purchased based on the actual reception of the antenna, not a necessity) and support for our country's ground