Selector switch
Made of dark brown Bakelite with crème coloured plastic. The crème coloured knob can be used for volume control in steps. The Nedap (N.V. Nederlandse Apparatenfabriek) logo is printed on the switch; a PTT logo is visible on the enclosure. The switch was made in the 1950s. It was sold in 2022.
Nedap was founded in 1929 and is still active in technology worldwide.
On the 14th of April, 1924 the first Dutch radio wire broadcasting organisation, Eerste Nederlandsche Radio Centrale (ENRC) was founded. Five subscribers were connected. The first programme broadcasted on the 21st of April, 1924 (Easter) was the Matthäus Passion by J.S. Bach; a direct transmission coming from the St. Bavo Church in Haarlem.
The organisation was a big success. In 1929 ENRC had 3500 subscribers, and distribution points in the Zaanstreek, and the cities of Amsterdam, Heiloo, Uitgeest, Alkmaar and Deventer.
In the thirties popularity raised rapidly. Transmissions of both Dutch radio stations were distributed, as well as a dedicated wire broadcast program. Shortly before the outbreak of WWII, mobilisation messages were broadcast.
Many subscribers turned away at the beginning of the war, as they didn't have any faith in a system that was completely in the hands of the Germans. In the second half of 1942, subscribers started using the system again as gradually the curfews were introduced and radios were being commandeered, starting in May 1943.
After the war the Dutch PTT invested a lot of money in the system, but the introduction of FM radio and increasing prosperity lead to a decrease in the number of connections. A last attempt to save wire broadcasting was a trail in The Hague.
Distribution of television programs using the existing infrastructure failed because of technical problems and the restriction of four programmes only. In 1964 the government decided to gradually abolish wire broadcasting. The end came on January 31st, 1975, as the last network in Delft fell into disuse.

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