A guyed mast is a tall thin vertical structure that depends on guy lines for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads. It requires guy lines to stay upright and to resist lateral (shear) forces such as wind loads. Examples include masts on sailing vessels, towers for telecommunications, meteorology, and masts on cranes, power shovels, draglines, and derricks, starting with the simple gin pole.
The Roumoules transmitter is the main broadcasting facility for longwave and mediumwave broadcasting of Radio Monte Carlo near Roumoules, France and is owned by Monaco Media Diffusion. The 1000 and 2000kW transmitters installed are among the most powerful in the world and can be received well at nighttime throughout Europe.
The Mühlacker Broadcasting Transmission Facility is a radio transmission facility near Mühlacker, Germany, first put into service on November 21, 1930. It uses two guyed steel tube masts as aerials and one guyed steel framework mast, which are insulated against ground. It has two transmission aerials for shortwave and one free standing steel framework tower for directional radio services. The shortwave transmitter was shut off on October 19, 2004. The medium wave transmitter was switched off in January 2012.
The Langenberg transmission tower is a broadcasting station for ananlog FM Radio and Digital-TV signals. It is located in Langenberg, Velbert, Germany and owned and operated by Westdeutscher Rundfunk, WDR.
The Westerglen transmitting station is a facility for longwave and mediumwave broadcasting established in 1932 at Westerglen Farm, 2 miles southwest of Falkirk, Stirlingshire, Scotland.
The Transmitter Ismaning was a large radio transmitting station near Ismaning, Bavaria, Germany. It was inaugurated in 1932. From 1932 to 1934 this transmitter used a T-antenna as transmitting antenna, which was spun between two 115-metre-high free-standing wooden lattice towers, which were 240 metres apart. As this antenna had an unfavourable vertical radiation pattern, which produced much skywave resulting in a too small fading-free reception area at night, in 1934 a new antenna was installed. Therefore, one of the towers was dismantled and rebuilt on a 39-metre-high (128 ft) wooden lattice base. While this work took place, an L-Antenna was used, which was spun between the other tower and a small auxiliary wooden tower. It became defunct in 1977 and was destroyed in 1983.
The Sender Bielstein is an FM- and TV-broadcasting facility on the 393-metre-high Bielstein mountain in the Forest of Teutoburg, North Rhine-Westphalia, Germany.
The Deutschlandsender III was a 500 kilowatt longwave transmitter, erected in 1938/39 near Herzberg, Brandenburg in Germany. Used for the Deutschlandsender radio broadcasts, the guyed mast reaching a height of 337 metres was the tallest construction in Europe and the second tallest in the world.
The Żórawina radio transmitter is a facility for FM transmission at Żórawina, south of Wrocław. It was established in 1932 as "Reichssender Breslau" and used as an antenna tower. Originally it was a 140-metre-tall free-standing lattice tower built of wood, on which a wire antenna was hung up. On the top of the tower there was an octagonal ring of bronze with a diameter of 10.6 metres for electrical lengthening of the antenna.
Nackasändaren is a facility for FM and TV-transmission at Nacka in Metropolitan Stockholm. It used from 1956 to 1983 two 160-metre-high (520 ft) guyed masts, which were designed as mast radiators for mediumwave transmission and therefore insulated against ground. In 1965 a further mast, a 299-metre-tall (981 ft) guyed steel lattice mast for FM and TV-transmissions was built. This mast is in opposite to the lower masts grounded, but carried in its upper guys insulators in order not to disturb the radiation pattern of the mediumwave transmitter. After termination of the AM transmissions, which occurred until 1978 on 773 kHz and after 1978 on 774 kHz on June 1, 1981, the old masts were demolished on November 2, 1983, and December 7, 1983. At their location a second 299-metre-tall (981 ft) steel framework mast for FM- and TV-transmission was built in 1984. After cancellation of the mediumwave transmission, the insulators of the guys of the older 299 metres tall mast were obsolete and removed.
The Wavre radio transmitter is a facility for Fm, Dab+ and TV broadcasting near Wavre in Belgium. Formerly the mediumwave transmissions used a grounded 250-metre-high guyed mast. Furthermore, there was a backup mast for medium wave transmissions, which was 90 metres high. For shortwave broadcasting there were several directional antennas and a curtain antenna.
The Zeven DECCA-transmitter was a transmitting facility for DECCA transmission at Zeven, Germany. It used a 93 metre tall guyed mast antenna, which is insulated against ground. As backup antenna, a 46-meter mast radiator also insulated against ground was in its proximity.
The Wiederau transmitter is the oldest broadcasting facility in Saxony. It is located near Wiederau, a village which is part of the municipality of Pegau, and is used for medium-wave, FM and Television broadcasting.
Marnach transmitter was a broadcasting facility of RTL near Marnach in the commune of Clervaux, in northern Luxembourg. The Marnach transmitter was built in 1955 for improving the transmission of the English-speaking program on 1439 kHz, which was transmitted from 1951 with an omnidirectional antenna from Junglinster, to the British Isles and for a better transmission on this frequency to Germany at daytime. Therefore, it was given a directional antenna with a switchable directional characteristic pointing north-northeast towards the Rhine-Ruhr area, Germany's most populated area, and west-northwest in the direction of the UK. This antenna was implemented in form of a directional antenna consisting of three ground-fed 105-metre-tall (350 ft) guyed mast antennas arranged in the form of an isosceles triangle with a 90-degree angle. As transmitters, two 100 kW units switched in parallel were used when it went in service in December 1955.
The Bungsberg telecommunications tower, also known as the Fernmeldeturm Schönwalde, is a 179-metre-high telecommunications tower situated on the Bungsberg, a hill which is the highest point in the north German state of Schleswig-Holstein.
Dillberg transmitter is a transmitting facility of the Bavarian Broadcasting Company on the 595-metre-high Dillberg mountain west of Neumarkt in der Oberpfalz, Bavaria, Germany. Dillberg transmitter went into service in 1955 for serving the area of Nuremberg with TV and FM radio programmes from a 198-metre-tall guyed mast.
Ravensburg-Horgenzell transmitter was a mediumwave broadcasting facility of Deutsche Telekom used for transmitting the program of Deutschlandfunk on the area of community Horgenzell northwest of Ravensburg in Baden-Württemberg. It was inaugurated on August 23, 1951, and used until 1959 for transmitting the radio programme of SWF with a transmission power of 40 kW on 1538 kHz. As antenna, it used a 120 metre tall guyed ground-fed lattice steel mast radiator at 47°47'10" N and 9°31'16" E.
Weiskirchen transmitter, is a mediumwave broadcasting tower in Weiskirchen, Germany. It is the property of Hessischer Rundfunk. It was built in 1967
Venets Transmitter is a facility for FM and TV-broadcasting near Venets and Samuil in Shumen Province, Bulgaria. Venets Transmitter uses as antenna tower a 302 metre tall guyed lattice steel mast with rectangular cross section. This mast, which was built in 1975, is the tallest radio mast in Bulgaria. The TV transmitter, which used it as antenna, was the most powerful TV transmitter in Bulgaria with 50 kW. It broadcast the program of BNT 1 on channel 5 and could be received in Romania, Moldova and Ukraine. In 2008 due to interference with foreign FM radio stations the transmitter was shut down and broadcasting of BNT 1 was switched to channel 56 on a new NEC transmitter. The analogue transmitters were shut down on September 30, 2015, when simulcast period ended and Bulgaria switched to DVB-T.
Col de la Madone transmitter is a very large broadcasting centre operated by Radio Monte Carlo north of Fontbonne, near Nice and Monaco, in France. It was established in 1965 and was used until completion of Roumoules radio transmitter for longwave broadcasting, using 3 320 metres tall guyed mast radiators, which do not exist any more. It was used for broadcasting on 702 kHz and 1467 kHz. Both antennas consist of 2 guyed mast radiators insulated against ground. The masts of the antenna for 1467 kHz are 101 metres tall and oriented in North-South direction. The masts of the antenna for 702 kHz are oriented in East-West direction pointing towards Milan, as it is used for transmitting a radio program in Italian language toward Italy. The western mast of this antenna, which acts as reflector, has a height of 250 metres while the eastern mast which is the radiator is 215 metres taller. Not far to the south, there is a centre for FM-broadcasting close to a military radar site and on Mount Angel there is a 146 metres tall partially guyed tower, which consists of a grounded lattice tower as basement and a guyed mast radiator insulated against ground as top. It was built in 1946 and first used for mediumwave broadcasting, but is today used for TV-broadcasting. Nearby there is also the shortwave transmitter of RMC with several dipole walls.
