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Radio Kootwijk (PCG)

"een dorp tussen Zand en Zenders"

 
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Scheveningen Radio en Radio Kootwijk   

This map shows the situation of Radio Kootwijk in 1965. The 25 large rhombus shaped wire antenna's are large highly directional Rhombic antenna's. The transmitting direction is in the direction of the sharp corner where you can see a line in the middle which in fact is a 700 Ohm terminating open line made of chrome-nickel resistance wire which dissipates HALF of the transmitter output power which then is not send to the unwanted direction. On the lower right side of the map there are several curtain antenna's and verticals. The main transmitter building is the black spot near the red structure  on the left where the (red) road makes a 90 degrees turn. The white spot in the middle of the red structure is a water basin for cooling water. (<b>Foto pch01</b>)
This map shows the situation of Radio Kootwijk in 1965. The 25 large rhombus shaped wire antenna's are large highly directional Rhombic antenna's. The transmitting direction is in the direction of the sharp corner where you can see a line in the middle which in fact is a 700 Ohm terminating open line made of chrome-nickel resistance wire which dissipates HALF of the transmitter output power which then is not send to the unwanted direction. On the lower right side of the map there are several curtain antenna's and verticals. The main transmitter building is the black spot near the red structure on the left where the (red) road makes a 90 degrees turn. The white spot in the middle of the red structure is a water basin for cooling water.
(Foto pch01)
This is PCH20, one of six older transmitters. It puts out 10 kW CW on 4250 kHz. During the 'Farewell party' of PCH on December 20 1998, many radio amateurs made a last and for most a first cross frequency contact through this transmitter. (<b>Foto pch02</b>)
This is PCH20, one of six older transmitters. It puts out 10 kW CW on 4250 kHz. During the 'Farewell party' of PCH on December 20 1998, many radio amateurs made a last and for most a first cross frequency contact through this transmitter.
(Foto pch02)

Build in de early sixties by the Dutch PTT, these transmitters were primarily used for ssb telephone and telex transmissions all over the world and of course the long distance PCH communications. (8 MHz and above) In the sixties the floor was crowded with transmitters, there was hardly any space left. On a site map from the sixties I counted 25 Rhombic and many other antenna's Since the eighties most transmitters disappeared from the floor On the photo you see the meters of the PCH20 transmitter with the nameplate BANDUNG Probably this transmitter was once used for telephone service to Bandung Indonesia. Just after taking this pictures PCH20 was powered off for the last time... After removal from the building it will be smashed with big hammers. It's remains will be sold as scrap metal. (<b>Foto pch03c</b>)
Build in de early sixties by the Dutch PTT, these transmitters were primarily used for ssb telephone and telex transmissions all over the world and of course the long distance PCH communications. (8 MHz and above) In the sixties the floor was crowded with transmitters, there was hardly any space left. On a site map from the sixties I counted 25 Rhombic and many other antenna's Since the eighties most transmitters disappeared from the floor On the photo you see the meters of the PCH20 transmitter with the nameplate BANDUNG Probably this transmitter was once used for telephone service to Bandung Indonesia. Just after taking this pictures PCH20 was powered off for the last time... After removal from the building it will be smashed with big hammers. It's remains will be sold as scrap metal.
(Foto pch03c)
Six 10 kW Marconi transmitters are available, each connected to a wide band cone antenna. The transmitters can be tuned to any frequency in the short-wave bands within a couple of seconds. They can be remotely controlled from IJmuiden, the operations center of Scheveningen Radio (<b>Foto pch03d</b>)
Six 10 kW Marconi transmitters are available, each connected to a wide band cone antenna. The transmitters can be tuned to any frequency in the short-wave bands within a couple of seconds. They can be remotely controlled from IJmuiden, the operations center of Scheveningen Radio
(Foto pch03d)

All prepared for the official close-down. On the foreground the driver and final tubes of the transmitters. On the background the cage of Faraday' where the control and audio-lines are coming in. The cage keeps RF out. (<b>Foto pch03f)
All prepared for the official close-down. On the foreground the driver and final tubes of the transmitters. On the background the cage of Faraday' where the control and audio-lines are coming in. The cage keeps RF out.
(Foto pch03f)
The situation somewhere in the sixties (<b>Foto pch04</b>)
The situation somewhere in the sixties
(Foto pch04)