WTWW shortwave Radio

What is Shortwave Broadcasting?

Shortwave broadcasting – the common term for High Frequency or HF broadcasting – is a radio service licensed by the FCC to operate between 5,950 KHz and 26,100 KHz. Shortwave is an international broadcast service intended to be received by the general public in other countries.

The uniqueness of shortwave is its reach. A powerful FM station may be heard for about 60 miles in any direction. One of the handful of remaining clear-channel AM stations may be heard up to 750 miles away at nighttime. But depending on the amount of power, the location of the station and its antennas, a shortwave station can be heard for vast distances. The secret is the ionosphere – a layer of the earth's atmosphere that reflects some radio waves back to the earth – rebounding shortwave to radio receivers thousands of miles from their point of origin.

Shortwave Radio and the World

Shortwave radio remains the only medium capable of direct communication from one country to listeners in another country without govermental intervention. With more than 1.5 billion shortwave receivers in use worldwide, the BBC estimates that at any given moment, over 200 million sets are tuned to shortwave broadcasts. Especially in developing countries, shortwave remains the dominant mass communications medium.

For example, shortwave listenership in the Americas ranges from 61% (Peru) to 41% (Guyana), 35% (northern Brazil) and 37% (Caribbean nations). Many of the boom box-type radio/tape player units sold in other countries, particularly in Latin America, include shortwave bands. Mexico, with about one third the population of the United States, alone has over 16 licensed shortwave stations and over 5 million shortwave users.

Despite the wealth of broadcast, cable, satellite and Internet services available, shortwave remain the dominant form of mass communications in many places throughout the world. And with the remarkably wide area coverage shortwave radio provides, it is a service that Paul himself might have had in mind when he quoted the Psalmist: "Their voice has gone out into all the earth, their words to the ends of the world.

什么是短波广播？

短波广播 - 高频或高频广播的常用术语 - 是由FCC授权在5,950 KHz和26,100 KHz之间运行的无线电服务。 Shortwave是一项旨在由其他国家的公众接收的国际广播服务。

短波的独特之处在于它的触角。可以在任何方向上听到一个强大的FM电台约60英里。少数剩余的清晰频道AM电台之一可能会在夜间750英里外听到。但是根据电量，电台及其天线的位置，可以听到远距离的短波电台。秘密就是电离层 - 一层地球的大气层，将一些无线电波反射回地球 - 将短波反射到距离它们原点数千英里的无线电接收器。

短波电台和世界

短波电台仍然是唯一能够在没有政府干预的情况下从一个国家直接传播到另一个国家的听众的媒介。 BBC估计，在全球范围内使用超过15亿个短波接收器，在任何特定时刻，超过2亿套都被调谐到短波广播。特别是在发展中国家，短波仍然是主要的大众传播媒介。

例如，美洲的短波听众范围从61％（秘鲁）到41％（圭亚那），35％（巴西北部）和37％（加勒比国家）。许多在其他国家销售的吊杆箱式收音机/磁带播放器单元，特别是在拉丁美洲，包括短波波段。墨西哥仅占美国人口的三分之一，仅拥有超过16个许可的短波电台和500多万短波用户。

尽管有广泛的有线广播，卫星和互联网服务，但短波仍然是全世界许多地方大众传播的主要形式。由于短波电台提供了非常广泛的覆盖范围，这是保罗本人在引用诗篇作者时可能想到的一项服务：“他们的声音已经传播到全世界，他们的话语传到了世界的尽头。