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Afghan Radio Provides Hope

In Afghanistan, many families suffer from the fear of not knowing where their family members are. But after thirty years of war, attention is finally being drawn to the issue. An Afghan radio program called “In Search of th

Posted on:09-29 View:131
B、dB、dBm、dBi、dBd、dBc Now You will Know

Bell (B) Bell (B) was originally used to indicate the ratio of volume power 10 to 1, named after Alexander Graham Bell. Therefore, 1B represents a power ratio of 10:1, which is a logarithmic relationship with a base of 10,100:1=2B and 1000:1=3B. The mathematical relationship is as

Posted on:09-27 View:289
Fixing TV Reception Issues

Poor TV and radio reception can be caused by a range of factors, including weak signal coverage, inadequate or broken antennas or other equipment, and interference. The vast majority of all television reception issues are caused by viewers choosing to watch the wr

Posted on:09-26 View:172
Community Radio: a Voice for the Poor

The transmitters may reach only a few miles, but community radio stations are enabling isolated communities across Africa to voice their own concerns. On air, ordinary citizens discuss issues that are central to them, such as gender relations and combatting HIV/AIDS. They share farmin

Posted on:09-25 View:152
The Role of Voltage Stabilizer

All electrical and electronic systems are designed and manufactured to operate at maximum efficiency with a given supply voltage, called the nominal operating voltage. For various reasons the voltage of the energy distribution does not remain constant, showing considerable fluct

Posted on:09-24 View:245
Choosing The Right RF Cable Assembly

Coaxia l cable assemblies are almost everywhere electronic systems can be found. And they have a simple job: to serve as a signal path to transfer signals from one location to another. But they must do that job without fail and with little or no change to the signals, whether they

Posted on:09-23 View:215
A Detailed Controduction of Repeater

This article introduces fundamental concepts of FM repeater operations and depicts a high level view of typical FM phone repeater anatomy and functioning. The goal is to demystify repeaters and help the newly licensed Technician overcome any initial bewilderment about repeaters.

Posted on:09-21 View:224
Media and Election--What Role do the Radio Play?

he media are essential to democracy, and a democratic election is impossible without media. A free and fair election is not only about the freedom to vote and the knowledge of how to cast a vote, but also about a participatory process where voters engage in public debate and have a

Posted on:09-20 View:170
Developing Communities through Radio

Community media focus on community participation with the goal of transforming society. They are conceived to inform people and allow them to participate in decisions that affect them.They can facilitate the empowerment of vulnerable communities – populations who are isolated geogr

Posted on:09-19 View:161
How to Get Free Satellite TV?

A reader asks: 'Can I get satellite TV for free? I have heard about free satellite TV channels one can receive with a free-to-air satellite receiver and dish. Is this true? If so, what satellite channels can I get, what equipment do I need, and is it legal?' The short answer

Posted on:09-18 View:472

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