Frequently used abbreviations and specialist terminology

APWPT: Association of Professional Wireless Production Technologies. The APWPT represents the interests of users and manufacturers of wireless systems in national and international regulatory and standardisation bodies. The association specialises in advising on technical issues. The “SOS – Save Our Spectrum” initiative is committed to raising public awareness and works in close cooperation with the APWPT.

BMVI: Bundesministerium für Verkehr und digitale Infrastruktur (Federal Ministry of Transport and Digital Infrastructure)

BMWi: Bundesministerium für Wirtschaft und Energie (Federal Ministry for Economic Affairs and Energy)

BNetzA: Bundesnetzagentur (Federal Network Agency)

BOS: Behörden und Organisationen mit Sicherheitsaufgaben (Authorities and Organisations providing Emergency and Security Services). These include civilian emergency services, such as the police, fire brigade and ambulance services. The BOS are also referred to (especially in English-speaking countries) as PPDR (Public Protection and Disaster Relief) services.

CEPT: Conférence Européenne des Administrations des Postes et des Télécommunications (European Conference of Postal and Telecommunications Administrations). CEPT is responsible (among other things) for regulating spectrum usage in Europe.

Digital dividend: digital TV (DVB-T) needs (due to compression at the time of transmission) far less bandwidth than analogue terrestrial television. This saving in bandwidth (or frequency) is known as the “digital dividend”. The first digital dividend was auctioned in Germany to mobile network operators in May 2010 and covered the spectrum 790 – 862 MHz. Digital dividend 2 (694 – 790 MHz) was auctioned in May/June 2015. A third digital dividend, covering the remaining part of the UHF TV spectrum (470 – 694 MHz) is already being discussed

Wireless production facilities: radio microphones and other wireless technology used in the production of programmes and events (see also PMSE). These include:

  • wireless microphones
  • wireless “in-ear” monitoring systems
  • wireless conference systems
  • wireless personal guidance systems
  • wireless cameras
  • wireless command systems
  • wireless light controls
  • wireless show and effect control systems

DVB-T: “Digital Video Broadcasting – Terrestrial”, digital terrestrial television (terrestrial = via aerial).

IEM: in-ear monitoring systems. Musicians use IEM systems at big-stage venues to ensure they are playing (or singing) in time. Show hosts and journalists use them to receive editorial instructions, international guests use them to listen to interpreters located backstage.

ITU: International Telecommunication Union. The ITU is a special organisation of the United Nations (UN) and organiser of the World Radio Conference (WRC). At this World Radio Conference, binding spectrum usage contracts are agreed, because radio waves travel across national borders.

PMSE: Programme Making and Special Events These describe all the wireless production facilities used in the professional production of events and content, irrespective of their form.

PPDR: Public Protection and Disaster Relief. This is the English expression used to refer to all the authorities and organisations providing emergency or security services.

PWMS: Professional Wireless Microphone Systems.

SAB/SAP: Services Ancillary to Broadcasting/Services Ancillary to Production. This is mainly used at international level and is similar in meaning to the term PMSE.

UHF-TV-Band: see “Where have radio microphones been transmitting until now”

WRC: World Radiocommunication Conference This is organised by the International Telecommunication Union (ITU). The WRC regulates use of the radio spectrum at international level, allowing radio systems to be used on a transnational basis and ensuring that as little interference as possible is encountered in border regions.