Bolshakovo transmitter was the most powerful mediumwave broadcasting station for mediumwave in the world, situated near Bolshakovo, Russia. It was used by Voice of Russia for broadcasting on the mediumwave frequencies 1116 kHz and 1386 kHz with a maximum transmission power of 2.5 Megawatts. Eight (8) guyed masts, equipped with special cage antennas, such called ARRT-antennas are installed. The masts are 257 metres tall and were built in 1974.
As of May 2008, it seems that the use of both mentioned frequencies have ceased, and the Bolshakovo Tx is probably no longer in use for mediumwave.
However, it is still listed as a shortwave transmitter[1], and can clearly be heard in the UK transmitting in DRM mode on 6155kHz between 15:00 UTC and 17:00 UTC on weekdays. This is despite it only apparently radiating 15 kW, and the fact that the UK is around 1700 km away from the transmitter and 50 - 60 degrees off the advertised beam direction.
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