Radio 4 is an NPO public-service radio

Radio

Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...

 network in the Netherlands

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

. It chiefly broadcasts classical music

Classical music

Classical music is the art music produced in, or rooted in, the traditions of Western liturgical and secular music, encompassing a broad period from roughly the 11th century to present times...

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Radio 4 began transmissions on 28 December 1975 under the name Hilversum 4. Its first programme was produced by the Veronica broadcasting association. The following broadcasting associations currently provide programming on Radio 4: AVRO

Avro

Avro was a British aircraft manufacturer, with numerous landmark designs such as the Avro 504 trainer in the First World War, the Avro Lancaster, one of the pre-eminent bombers of the Second World War, and the delta wing Avro Vulcan, a stalwart of the Cold War.-Early history:One of the world's...

, KRO

KRO

KRO, or Katholieke Radio Omroep , is a Dutch public broadcasting organization founded on 23 April 1925. Broadly Catholic in its spiritual outlook, KRO broadcasts the bulk of its television output on the Nederland 1 channel. KRO is also responsible for managing broadcasts made by the Catholic Church...

, MAX

MAX

Max, originally an abbreviation of "Maximilian" may refer to:-Surname:*Adolphe Max, Belgian politician*Gabriel von Max, Austrian painter*Peter Max, American artist*Tucker Max, American author-Fictional characters:...

, NCRV

NCRV

NCRV is a public radio and television broadcaster in the Netherlands, mostly transmitting on Nederland 1 and Nederland 2....

, NPS

NPS

- Organizations :* National Pension Service, the world's fourth-biggest pension fund, which manages $270 billion in assets in Korea* National Park Service, the U.S...

, TROS

TROS

TROS is a Dutch television and radio organization part of the Netherlands Public Broadcasting...

, VARA, VPRO

VPRO

The VPRO was established in the Netherlands in 1926 as a religious broadcasting organization. Falling under the Protestant pillar, it represented the Liberal Protestant current...

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Initially, the station operated only during the evenings, but currently the station broadcasts 24 hours per day, providing surround sound

Surround sound

Surround sound encompasses a range of techniques such as for enriching the sound reproduction quality of an audio source with audio channels reproduced via additional, discrete speakers. Surround sound is characterized by a listener location or sweet spot where the audio effects work best, and...

 transmissions via the internet

Internet

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...

 and satellite

Satellite

In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavour. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon....

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