Broadcast transmitter

A broadcast transmitter is a transmitter used for broadcasting, an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images (video) to television receivers (televisions). The term often includes the antenna which radiates the radio waves, and the building and facilities associated with the transmitter. A broadcasting station (radio station or television station) consists of a broadcast transmitter along with the production studio which originates the broadcasts. Broadcast transmitters must be licensed by governments, and are restricted to specific frequencies and power levels. Each transmitter is assigned a unique identifier consisting of a string of letters and numbers called a callsign, which must be used in all broadcasts.

Antenna tower of Crystal Palace transmitter, London


In broadcasting and telecommunication, the part which contains the oscillator, modulator, and sometimes audio processor, is called the "exciter". Most transmitters use the heterodyne principle, so they also have frequency conversion units. Confusingly, the high-power amplifier which the exciter then feeds into is often called the "transmitter" by broadcast engineers. The final output is given as transmitter power output (TPO), although this is not what most stations are rated by.

Effective radiated power (ERP) is used when calculating station coverage, even for most non-broadcast stations. It is the TPO, minus any attenuation or radiated loss in the line to the antenna, multiplied by the gain (magnification) which the antenna provides toward the horizon. This antenna gain is important, because achieving a desired signal strength without it would result in an enormous electric utility bill for the transmitter, and a prohibitively expensive transmitter. For most large stations in the VHF- and UHF-range, the transmitter power is no more than 20% of the ERP.

For VLF, LF, MF and HF the ERP is typically not determined separately. In most cases the transmission power found in lists of transmitters is the value for the output of the transmitter. This is only correct for omnidirectional aerials with a length of a quarter wavelength or shorter. For other aerial types there are gain factors, which can reach values until 50 for shortwave directional beams in the direction of maximum beam intensity.

Since some authors take account of gain factors of aerials of transmitters for frequencies below 30 MHz and others not, there are often discrepancies of the values of transmitted powers.

Power supply

Transmitters are sometimes fed from a higher voltage level of the power supply grid than necessary in order to improve security of supply. For example, the Allouis, Konstantynow and Roumoules transmitters are fed from the high-voltage network (110 kV in Alouis and Konstantynow, 150 kV in Roumoules) even though a power supply from the medium-voltage level of the power grid (about 20 kV) would be able to deliver enough power. [1][2]

Cooling of final stages

Low-power transmitters do not require special cooling equipment. Modern transmitters can be incredibly efficient, with efficiencies exceeding 98 percent. However, a broadcast transmitter with a megawatt power stage transferring 98% of that into the antenna can also be viewed as a 20 kilowatt electric heater.

For medium-power transmitters up to a several tens of kilowatts, including 50 kW AM and 20 kW FM, forced air cooling is generally used. At power levels above these some transmitters have the output stage cooled by a forced liquid cooling system analogous to an automobile cooling system. Since the coolant directly touches the high-voltage anodes of the tubes, only distilled, deionised water or a special dielectric coolant can be used in the cooling circuit. This high-purity coolant is in turn cooled by a heat exchanger, where the second cooling circuit can use water of ordinary quality because it is not in contact with energized parts. Very-high-power tubes of small physical size may use evaporative cooling by water in contact with the anode. The production of steam allows a high heat flow in a small space.

Protection equipment

The high voltages used in high power transmitters (up to 40 kV) require extensive protection equipment. Also, transmitters are exposed to damage from lightning. Transmitters may be damaged if operated without an antenna, so protection circuits must detect the loss of the antenna and switch off the transmitter immediately. Tube-based transmitters must have power applied in the proper sequence, with the filament voltage applied before the anode voltage, otherwise the tubes can be damaged. The output stage must be monitored for standing waves, which indicate that generated power is not being radiated but instead is being reflected back into the transmitter.

Lightning protection is required between the transmitter and antenna. This consists of spark gaps and gas-filled surge arresters to limit the voltage that appears on the transmitter terminals. The control instrument that measures the voltage standing-wave ratio switches the transmitter off briefly if a higher voltage standing-wave ratio is detected after a lightning strike, as the reflections are probably due to lightning damage. If this does not succeed after several attempts, the antenna may be damaged and the transmitter should remain switched off. In some transmitting plants UV detectors are fitted in critical places, to switch off the transmitter if an arc is detected. The operating voltages, modulation factor, frequency and other transmitter parameters are monitored for protection and diagnostic purposes, and may be displayed locally and/or at a remote control room.


A commercial transmitter site will usually have a control building to shelter the transmitter components and control devices. This is usually a purely functional building, which may contain apparatus for both radio and television transmitters. To reduce transmission line loss the transmitter building is usually immediately adjacent to the antenna for VHF and UHF sites, but for lower frequencies it may be desirable to have a distance of a few score or several hundred metres between the building and the antenna. Some transmitting towers have enclosures built into the tower to house radio relay link transmitters or other, relatively low-power transmitters. A few transmitter buildings may include limited broadcasting facilities to allow a station to use the building as a backup studio in case of incapacitation of the main facility.

Legal and regulatory aspects

Since radio waves go over borders, international agreements control radio transmissions. In European countries like Germany, often the national Post Office is the regulating authority. In the United States, broadcast and industrial transmitters are regulated by the Federal Communications Commission (FCC). In Canada, technical aspects of broadcast and radio transmitters are controlled by Industry Canada, but broadcast content is regulated separately by the Canadian Radio-television and Telecommunications Commission (CRTC). In Australia transmitters, spectrum, and content are controlled by the Australian Communications and Media Authority (ACMA). The International Telecommunication Union (ITU) helps managing the radio-frequency spectrum internationally.


As in any costly project, the planning of a high power transmitter site requires great care. This begins with the location. A minimum distance, which depends on the transmitter frequency, transmitter power, and the design of the transmitting antennas, is required to protect people from the radio frequency energy. Antenna towers are often very tall and therefore flight paths must be evaluated. Sufficient electric power must be available for high power transmitters. Transmitters for long and medium wave require good grounding and soil of high electrical conductivity. Locations at the sea or in river valleys are ideal, but the flood danger must be considered. Transmitters for UHF are best on high mountains to improve the range (see radio propagation). The antenna pattern must be considered because it is costly to change the pattern of a long-wave or medium-wave antenna.

Antenna guyed tower

Transmitting antennas for long and medium wave are usually implemented as a mast radiator. Similar antennas with smaller dimensions are used also for short wave transmitters, if these send in the round spray enterprise. For arranging radiation at free standing steel towers fastened planar arrays are used. Radio towers for UHF and TV transmitters can be implemented in principle as grounded constructions. Towers may be steel lattice masts or reinforced concrete towers with antennas mounted at the top. Some transmitting towers for UHF have high-altitude operating rooms and/or facilities such as restaurants and observation platforms, which are accessible by elevator. Such towers are usually called TV tower. For microwaves one frequently uses parabolic antennas. These can be set up for applications of radio relay links on transmitting towers for FM to special platforms. For example, large parabolic antennas ranging from 3 to 100 meters in diameter are necessary to pass on signals to television satellites and space vehicles. These plants, which can be used if necessary also as radio telescope, are established on free standing constructions, whereby there are also numerous special designs, like the radio telescope in Arecibo.

Just as important as the planning of the construction and location of the transmitter is how its output fits in with existing transmissions. Two transmitters cannot broadcast on the same frequency in the same area as this would cause co-channel interference. For a good example of how the channel planners have dovetailed different transmitters' outputs, see Crystal Palace UHF TV channel allocations. This reference also provides a good example of a grouped transmitter, in this case an A group. That is, all of its output is within the bottom third of the UK UHF television broadcast band. The other two groups (B and C/D) utilise the middle and top third of the band, see graph. By replicating this grouping across the country (using different groups for adjacent transmitters), co-channel interference can be minimised, and in addition, those in marginal reception areas can use more efficient grouped receiving antennas. Unfortunately, in the UK, this carefully planned system has had to be compromised with the advent of digital broadcasting which (during the changeover period at least) requires yet more channel space, and consequently the additional digital broadcast channels cannot always be fitted within the transmitter's existing group. Thus many UK transmitters have become "wideband" with the consequent need for replacement of receiving antennas (see external links). Once the Digital Switch Over (DSO) occurs the plan is that most transmitters will revert to their original groups, source Ofcom July 2007.

Further complication arises when adjacent transmitters have to transmit on the same frequency and under these circumstances the broadcast radiation patterns are attenuated in the relevant direction(s). A good example of this is in the United Kingdom, where the Waltham transmitting station broadcasts at high power on the same frequencies as the Sandy Heath transmitting station's high power transmissions, with the two being only 50 miles apart. Thus Waltham's antenna array [1] does not broadcast these two channels in the direction of Sandy Heath and vice versa.

Where a particular service needs to have wide coverage, this is usually achieved by using multiple transmitters at different locations. Usually, these transmitters will operate at different frequencies to avoid interference where coverage overlaps. Examples include national broadcasting networks and cellular networks. In the latter, frequency switching is automatically done by the receiver as necessary, in the former, manual retuning is more common (though the Radio Data System is an example of automatic frequency switching in broadcast networks). Another system for extending coverage using multiple transmitters is quasi-synchronous transmission, but this is rarely used nowadays.

Main and relay (repeater) transmitters

Transmitting stations are usually either classified as main stations or relay stations (also known as repeaters, translators or sometimes "transposers").

Main stations are defined as those that generate their own modulated output signal from a baseband (unmodulated) input. Usually main stations operate at high power and cover large areas.

Relay stations (translators) take an already modulated input signal, usually by direct reception of a parent station off the air, and simply rebroadcast it on another frequency. Usually relay stations operate at medium or low power, and are used to fill in pockets of poor reception within, or at the fringe of, the service area of a parent main station.

Note that a main station may also take its input signal directly off-air from another station, however this signal would be fully demodulated to baseband first, processed, and then remodulated for transmission.

Transmitters in culture

Some cities in Europe, like Mühlacker, Ismaning, Langenberg, Kalundborg, Hörby and Allouis became famous as sites of powerful transmitters. For example, Goliath transmitter was a VLF transmitter of Nazi Germany's Kriegsmarine during World War II located near Kalbe an der Milde in Saxony-Anhalt, Germany. Some transmitting towers like the radio tower Berlin or the TV tower Stuttgart have become landmarks of cities. Many transmitting plants have very high radio towers that are masterpieces of engineering.

Having the tallest building in the world, the nation, the state/province/prefecture, city, etc., has often been considered something to brag about. Often, builders of high-rise buildings have used transmitter antennas to lay claim to having the tallest building. A historic example was the "tallest building" feud between the Chrysler Building and the Empire State Building in New York, New York.

Some towers have an observation deck accessible to tourists. An example is the Ostankino Tower in Moscow, which was completed in 1967 on the 50th anniversary of the October Revolution to demonstrate the technical abilities of the Soviet Union. As very tall radio towers of any construction type are prominent landmarks, requiring careful planning and construction, and high-power transmitters especially in the long- and medium-wave ranges can be received over long distances, such facilities were often mentioned in propaganda. Other examples were the Deutschlandsender Herzberg/Elster and the Warsaw Radio Mast.

KVLY-TV's tower located near Blanchard, North Dakota was the tallest artificial structure in the world when it was completed in 1963. It was surpassed in 1974 by the Warszawa radio mast, but regained its title when the latter collapsed in 1991. It was surpassed by the Burj Khalifa skyscraper in early 2009, but the KVLY-TV mast is still the tallest transmitter.


See also


  1. ^ Long Waves, MCR, Roumoules station radio
  2. ^ Allouis - France Inter

External links

Allouis longwave transmitter

The Allouis longwave transmitter has been France's central longwave broadcast transmitter since 1939. It is located near the village of Allouis.

It broadcast the France Inter public radio station from October 1952 until 31 December 2016. Since 2017, it broadcasts only the TDF time signal.

The first transmitter, built in 1939 during the Phoney War, used an aerial with four masts and a transmitter rated at 500 kilowatts. It was destroyed in 1944 during the scorched earth retreat by German forces.

On 19 October 1952 a new 250 kW transmitter came into service. This used a special cage aerial, mounted on a 308-metre high earthed mast. In 1957 the transmission power was increased to 600 kW, in 1974 to 1,000 kW, and in 1981 to 2,000 kW. Transmission power is reduced to 1,000 kW during the hours of darkness.

In 1974 the aerial was renewed. The cage aerials were removed and the mast height was increased to 350 m. A second mast of the same height was constructed at the same time.

In 1977, the current phase modulated time signal was added to the transmissions. The broadcast frequency, formerly 164 kHz, was changed to 163.840 kHz (the 5th harmonic of the common 32768 Hz timekeeping frequency) to be a more convenient frequency standard.In 1980, the first atomic clock was installed to regulate the carrier frequency.On 1 February 1986, the frequency was changed to its current value of 162 kHz (still an accurately controlled frequency standard) to bring it to a multiple of 9 kHz in accordance with the Geneva Frequency Plan of 1975.

The radio channel France Inter announced during 2016 that the channel would discontinue transmitting on the 162 kHz frequency on 1 January 2017, seeking cost savings of approximately 6 million Euros per year. The transmission of the TDF time signal will be continued after this date, as this time signal is critical for over 200,000 devices, which are deployed within French enterprises and state entities, like the French railways SNCF, the electricity distributor ENEDIS, airports, hospitals, municipalities, et cetera.

Aspidistra (transmitter)

Aspidistra was a British medium wave radio transmitter used for black propaganda and military deception purposes against Nazi Germany during World War II. At times in its history it was the most powerful broadcast transmitter in the world. Its name – after the popular foliage houseplant – was inspired by the comic song The Biggest Aspidistra in the World, best known as sung by Gracie Fields.

The transmitter was installed in 1942 at a purpose-built site near Crowborough in southeast England. This was equipped with other medium wave and short wave transmitters, which also used the Aspidistra name, being known as ASPI 2, ASPI 3, ASPI 4, etc. However, when the name Aspidistra was used on its own it always referred to the original medium wave transmitter (ASPI 1).

After the war, Aspidistra and other transmitters at Crowborough were used for BBC External Service broadcasts to Europe. The station closed in 1982.

Austin transformer

An Austin transformer is a special type of an Isolation transformer used for feeding the air-traffic obstacle lamps and other devices on a mast radiator antenna insulated from ground. As the electrical potential difference between the antenna and ground is high (up to 300 kV), feeding the lamps directly is impossible. The transformer consists of two ring-like windings with a large air space between the winding and the magnetic core. The large spacing provides both isolation from high voltage and low inter-winding coupling capacitance.

The Austin transformer is named after its inventor, Arthur O. Austin, who graduated from Stanford University in 1903 and who obtained 225 patents in his career.

Broadcast relay station

A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater (two-way radio) or complementary station (Mexico), is a broadcast transmitter which repeats (or transponds) the signal of a radio or television station to an area not covered by the originating station. It expands the broadcast range of a television or radio station beyond the primary signal's original coverage or improves service in the original coverage area. The stations may be (but are not usually) used to create a single-frequency network. They may also be used by an FM or AM radio station to establish a presence on the other band.

A re-broadcaster may be owned by a community group, rather than the owner of the primary station. WHLS/WHLX in Port Huron, Michigan purchased a translator and switched to an alternative rock format shortly afterwards without mentioning the original FM translator, except for its legally required top-of-the-hour ID. No AM frequencies have been mentioned.

Caribbean Broadcasting Corporation


The Caribbean Broadcasting Corporation (CBC) is a public radio and television broadcaster, located in Barbados.

The television service broadcasts on channel 8 and is the only legally licensed, over-the-air television channel broadcasting in the country of Barbados. The corporation also owns and operates three radio stations: CBC Radio on 94.7 MHz FM and 900 kHz AM, The One on 98.1 MHz FM and Q-100.7 on 100.7 MHz FM.

Besides the terrestrial television and radio the CBC operates a wireless Cable TV subscription service called Multi-Choice TV (MCTV) which offers many television stations from around the globe, including the United States, Canada, Europe, the Caribbean and Latin America.

CBC's studios and offices are located North of Wildey at The Pine, Saint Michael. The television broadcast transmitter is located at the Cave Hill Campus of the University of the West Indies (Lazaretto, Black Rock), however it will soon be replaced by a transmitter at The Belle, St. Michael. The television broadcast is provided in the NTSC television format.

The CBC falls under the ministry and jurisdiction of the Prime Minister's Office. In 2008, Lars Soderstrom became the General Manager of the CBC.In August 2006, Chairman, Sonwabo Funde of the South African Broadcasting Corporation (SABC) reportedly held discussions with Barbadian government officials with the aim of forming a partnership or acquiring a stake in the CBC..

In early January 2007, CBC had broadcast its sponsorships and TV broadcaster CBC TV 8 for the hosting of the ICC Cricket World Cup West Indies 2007 here in Barbados from New Year's Day, 1 January to National Heroes' Day, 28 April, 2007 during live broadcast at the Kensington Oval, Fontabelle, St. Michael, from 11 to 21 and 28, 2007 with the West Indies, Barbados, Grenada, St. Lucia, Guyana, Trinidad and Tobago, Antigua and Jamaica vs. England, India, Australia and New Zealand.

In 2012 as part of a campaign promise the Barbados Labour Party's leader, Owen Arthur stated if his party wins the upcoming general election, the CBC could become privatised under that party's plan to reform the Barbadian Government.The CBC is a member of: the Caribbean Broadcast Media Partnership on HIV/AIDS, the Caribbean Cable & Telecommunications Association, and the Commonwealth Broadcasting Association within the Commonwealth of Nations.

The Caribbean Broadcasting Corporation had celebrated its 50th Golden Anniversary of its Radio and TV stations on 15 December, 2013.

Dipole field strength in free space

Dipole field strength in free space, in telecommunications, is the electric field strength caused by a half wave dipole under ideal conditions. The actual field strength in terrestrial environments is calculated by empirical formulas based on this field strength.


Distortionmeter (or more precisely distortion factor meter) is an electronic measuring instrument which displays the amount of distortion added to the original signal by an electronic circuit.

Frequency offset

In radio engineering, a frequency offset is an intentional slight shift of broadcast radio frequency (RF), to reduce interference with other transmitters.


Nautel Ltd. is a Canadian manufacturer of AM and FM radio broadcast transmitters, navigational radio beacons, Differential Global Positioning System (DGPS) transmitters, NOAA weather radio transmitters, LF PNT/eLORAN transmitters, SONAR high-power low-frequency amplifiers and SONAR systems, medium frequency (MF) telegraph and NAVTEX transmitters, and high frequency (HF) amplifiers for dielectric heating applications. Nautel is best known as the first company to develop a commercially available fully solid state broadcast transmitter.

On the Air Live with Captain Midnight

On the Air Live with Captain Midnight is a 1979 American comedy-drama film directed by Beverly Sebastian and Ferd Sebastian with Tracy Sebastian as Marvin Ziegler, also known as Captain Midnight (not to be confused with the Captain Midnight serial character from the 1930s and 1940s), who runs his own pirate radio station and becomes an underground cult hit.The film was released in 1979 although it was filmed in 1977. The film is about a teenager who has a mobile broadcast transmitter in his van that allows him to take over the airwaves as a renegade disc jockey. Veteran Los Angeles D.J. Jim Ladd co-stars in the film as a disc jockey.


At 1,028 metres (3,373 ft) high, Slavnik is one of the highest peaks of the Slovenian Istria. It is part of the Čičarija landscape. Tuma Hut on Slavnik, named after the mountaineer Henrik Tuma, stands about 10 metres (33 ft) below its peak. At its peak stands a broadcast transmitter.

Stadelheim Transmitter

Stadelheim Transmitter was a medium wave broadcast transmitter in Munich-Stadelheim, built in 1926 in the neighbourhood of the famous Stadelheim Prison. It took up experimental operation on March 1, 1926, and full operation on April 1, 1926. As antenna, this transmitter used a t-antenna hung up on two 100-metre-high (330 ft) freestanding steel framework towers. The transmitter used a tube transmitter and a machine transmitter from the company C Lorenz AG, the company which made the Lorenz cipher machine. However, the machine transmitter had numerous technical problems.


Timboroa (also Timbaroa and Tomborou) is a town in Baringo County, Kenya. It is located near the border with Uasin Gishu County with the boundary being the most northwesterly point of Timboroa Forest leading on to Tinderet Forest in a westerly direction. Timboroa lies along the Equator Line. The area is mainly covered with Bamboos Grasses. Other small townships located in Timboroa area are Matharu, Hilloti (Corruption from English Hill Tea), Mumberes, Equator, Makutano, Mlango Moja through to Mlango Tano. The region has been home to a number of notable athletes, both male and female, including Barmasai.

Tipaza Longwave Transmitter

Tipaza Longwave Transmitter is a Broadcast transmitter of Algeria's Entreprise nationale de Radiodiffusion sonore. It broadcasts the French-speaking station Alger Chaîne 3 on the longwave frequency of 252 kHz. Tipaza Longwave Transmitter, which is situated near Tipaza at 36°33'58" N and 2°28'50" E, has a transmission power of 1500 kW during the day and 750 kW at night. Tipaza Longwave Transmitter antenna is a 355-meter tall guyed mast, which is the second-tallest structure of Algeria.


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

Transmitters are necessary component parts of all electronic devices that communicate by radio, such as radio and television broadcasting stations, cell phones, walkie-talkies, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, spacecraft, radar sets and navigational beacons. The term transmitter is usually limited to equipment that generates radio waves for communication purposes; or radiolocation, such as radar and navigational transmitters. Generators of radio waves for heating or industrial purposes, such as microwave ovens or diathermy equipment, are not usually called transmitters, even though they often have similar circuits.

The term is popularly used more specifically to refer to a broadcast transmitter, a transmitter used in broadcasting, as in FM radio transmitter or television transmitter. This usage typically includes both the transmitter proper, the antenna, and often the building it is housed in.


91.7 WCUR FM The Curve, also known as West Chester University Radio, is a college radio station that broadcasts in the Philadelphia area via a transmitter that covers a 5-mile radius around West Chester University in West Chester, Pennsylvania. WCUR offers a wide variety of music, news, sports, and specialty programming. WCUR is considered a free format station, and it does not require that DJs play within certain parameters. All undergraduate students of West Chester University are free to participate and become DJs. WCUR began as WCSC AM 64, a carrier current station only available on campus. The call sign WCUR was being used in 1974. In 1976 the on air slogan became 64CUR and a Part 15 FM transmission was added at .1 watt to serve the Sykes Student Union building and extend across the street to Killnger Hall. Efforts began at that time to seek a class A FM license, but funds were not approved. In the mid-1980s the station changed its call letters to WCUR AM 68, but it remained a carrier current station. In 1998, the station received a construction permit to build an FM station, and after installing a broadcast transmitter and antenna atop Sykes Student Union in the summer of 1999, the station signed on as WCUR 91.7 FM on September 1, 1999. Since 2001, WCUR also streams live on air from anywhere in the world from its website,

WCUR currently averages about 100 members. In 2012, WCUR won "Most Improved Student Organization of the Year" and "Student Organization of the Year."

WCUR has become home to hundreds of undergraduate students. In addition to promoting events on campus with other organizations, WCUR also broadcasts West Chester University Athletics. Every week WCUR broadcasts everything from football to baseball to basketball thanks to the help of their Sports Director and committee members.


WDET-FM (101.9 FM) is a public radio station in Detroit, Michigan. Licensed to Wayne State University in the city's Cass Corridor neighborhood, about a mile south of the New Center neighborhood, WDET broadcasts original programming and shows from National Public Radio, Public Radio International and American Public Media. The station serves Metro Detroit and is the primary provider of news involving the American automotive industry and Michigan politics within the NPR distribution network.WDET-FM is licensed by the U.S. Federal Communications Commission for hybrid (digital plus analog) broadcasting.


WFXH-FM, known as "Rock 106.1", is an active rock radio station targeted to Savannah, Georgia. The station was a monitored reporter on the Alternative (Modern Rock) panel. Formerly, WFXH reported as an Alternative station to Arbitron and various radio industry publications. The station featured a specialty show called Underexposed Sunday nights 9-11pm. During the show they spotlight indie rock artists like The Decemberists, The Shins, Yeah Yeah Yeahs, The Arcade Fire, and Cold War Kids, along with local acts. That show has apparently been cancelled, its presence excised from the station's website. In April 2008,WFXH debuted You Heard It First, a new show heard weeknights at 11PM that features only new rock, as part of what the station calls "New Rock Nights". Rock 106.1 also recently began streaming the station online at their website.

Rock 106.1 was also home to Lex and Terry who have dominated morning drive for a number of years. In September 2006, Rock 106.1 moved its main studios from Hilton Head Island to Savannah. The station (along with sister stations 103.1 the Drive and Lucky Dog Country 106.9) have studios and sales offices in both Savannah and Hilton Head; the only cluster in the market with this capability. The station's broadcast transmitter is near Bluffton, South Carolina.

The station's program director is former Operating Manager for Independence Media in Peoria and former WWCT Program Director Gabe Reynolds.

Among WFXH former staffers are Dustin Matthews (formerly with Alternative WFNX/Boston, now the Program Director at KLLT (ALT 104.9)/St. Louis, as well as Director/Alternative Rock Programming for iHeartMedia’s St. Louis region and also PD of sister Alternative KDXA (ALT 106.3)/Des Moines.), Leslie Scott (who went from Adult Album Alternative KBXR/Columbia, Missouri to Adult Album Alternative KMTT/Seattle in February 2012) and Lexie Kaye (recently with Classic Hits WSRV/Atlanta).

2014 saw WFXH take the ratings lead among Rock stations from WIXV-FM I95 95.5FM.


WRSA-FM (96.9 FM, "Mix 96.9") is an adult contemporary music-formatted radio station serving the Huntsville, Alabama, area.The broadcast transmitter and tower for WRSA-FM is located on Brindlee Mountain, and the station's studios are located on Memorial Parkway (US 231) in Huntsville.

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