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.
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