Malabar Radio Station was a VLF radio telegraphic transmitter in Malabar, Indonesia ( coordinates: 7°6′58.61″S 107°36′22.26″E / 7.1162806°S 107.6061833°E), for a radio link to the Netherlands. It used one of the most powerful arc transmitters ever built, which had a power of 2400 kW. Malabar Radio Station used a couple of parallel wires spun about 2 km long between two mountain ridges as an antenna.[1]