WWRB is a shortwave

Shortwave

Shortwave radio refers to the upper MF and all of the HF portion of the radio spectrum, between 1,800–30,000 kHz. Shortwave radio received its name because the wavelengths in this band are shorter than 200 m which marked the original upper limit of the medium frequency band first used...

 international broadcasting

International broadcasting

International broadcasting is broadcasting that is deliberately aimed at a foreign, rather than a domestic, audience. It usually is broadcast by means of longwave, mediumwave, or shortwave radio, but in recent years has also used direct satellite broadcasting and the Internet as means of reaching...

 station known as both "World Wide Religious Broadcasting" and (to a lesser extent) "World Wide Radio Broadcasting" broadcasting from Morrison, Tennessee

Morrison, Tennessee

Morrison is a town in Warren County, Tennessee, United States. The population was 684 at the 2000 census.-Geography:Morrison is located at .According to the United States Census Bureau, the town has a total area of , all of it land....

. It is a subsidiary of Airline Transport Communications Incorporated. The station features primarily Christian

Christian

A Christian is a person who adheres to Christianity, an Abrahamic, monotheistic religion based on the life and teachings of Jesus of Nazareth as recorded in the Canonical gospels and the letters of the New Testament...

 religious programming. WWRB is unusual among shortwave broadcast stations in that it does not utilize radio airtime brokers for selling airtime, instead preferring to directly rent time to clients.

WWRB uses four 100 kW to 150 kW transmitter

Transmitter

In electronics and telecommunications a transmitter or radio transmitter is an electronic device which, with the aid of an antenna, produces radio waves. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating...

s and six antennas

Antenna (radio)

An antenna is an electrical device which converts electric currents into radio waves, and vice versa. It is usually used with a radio transmitter or radio receiver...

 to provide their services to regions of the world specifically requested by broadcasters. At this time, not all of their antennas appear to be in use. WWRB operates 24 hours a day, seven days a week, changing frequencies as shortwave propagation

Radio propagation

Radio propagation is the behavior of radio waves when they are transmitted, or propagated from one point on the Earth to another, or into various parts of the atmosphere...

 changes to maintain their target reception areas. Their main targeted services are titled Global-I through Global-IV.

Transmitters

• Global-I serves Europe, Middle East, Africa
• Global-II serves Australia and is leased full-time by Republic Broadcasting Network
• Global-III serves Europe, Middle East, Northern Africa, Canada, and Asia and is leased full-time by Overcomer Ministry
• Global-IV serves Canada, and Asia and is leased full-time by Overcomer Ministry

Frequencies

• Global-I: 3.185, 3.215, 11.920
• Global-II: 5.050, 5.745, 12.180
• Global-III: 3.145, 3.185, 5.745, 9.385
• Global-IV: 6.890