Medium wave transmitter Flevoland
The medium wave transmitter Flevoland was operated by KPN Broadcast Services . The plant was located near Zeewolde and transmitted medium waves on the frequencies 747 kHz and 1008 kHz with an output of 400 kilowatts.
Antenna system
A directional antenna consisting of two identical guyed 195 meter high steel truss masts is used as the antenna system, which is designed as a shrinkage-reducing antenna for both frequencies. Both masts are grounded at the base and carry a trap antenna that is connected to the mast construction above the isolator at a height of 95 meters, which electrically divides the mast into two sections.
history
The transmitter was built in 1980 to replace the Lopik transmitter that had been used up until then . From 1983 the program Hilversum 1 (today NPO Radio 2 ) was broadcast on the frequency 1008 kHz , on the frequency 747 kHz Hilversum 2 (today NPO Radio 1 ). From 1985 on, Hilversum 1, renamed Radio 2, was taken off the medium wave and Radio 5, which is still widespread today, was switched on. The frequency 1008 kHz had to be transferred to private radio in 2003 after Radio 1 was broadcast there for a transitional period from 2001 to 2003. Before that, there was a ring swap where Radio 5 changed to 747 kHz and Radio 1 to 1008 kHz. to the frequency 747 kHz and renamed itself to Radio 747, which was reversed in 2006. From 2004 to 2007 the program Radio 10 Gold ran on the frequency 1008 kHz, since 2007 the Christian program Groot Nieuws Radio .
At the beginning of 2014, NPO , the public broadcaster of the Netherlands, announced that it would end the medium wave broadcasting of Radio 5 on September 1, 2015. At that time around 250,000 listeners (which corresponds to about a quarter of the total number of listeners to Radio 5) used medium wave as a reception path. On September 1, 2015 at 12:02 a.m., the 747 kHz transmitter was taken off the medium wave. Groot Nieuws Radio's 1008 kHz transmitter was to remain in place until September 2017. Broadcasting was finally extended to January 1, 2019. A few days after Groot Nieuws Radio was switched off, the two transmission masts were blown up.
Frequencies and Programs
In the past, both programs were broadcast with 400 kilowatts of power, then only Groot Nieuws Radio with 100 kW was broadcast. Two tube transmitters Telefunken S 4006 from the early years of the transmission system were used as transmitters, which are designed for a maximum transmission power of 600 kW.
|
Frequency (kHz) |
program |
ERP (kW) |
Transmission diagram round (ND) / directional (D) |
|---|---|---|---|
| 1008 | Groot Nieuws Radio | 100 | D (133 °) |
See also
Web links
- MW antenna system Flevoland In: waniewski.de
Individual evidence
- ↑ Groot Nieuws Radio blijft op de middengolf , radio-tv-nederland.nl , August 27, 2015 (Dutch).
Coordinates: 52 ° 22 ′ 30 ″ N , 5 ° 25 ′ 1 ″ E