YouTube - Marconi Brookmans Park Transmitters

The Marconi B6034 50kW Medium Wave transmitters at Brookmans Park in Hertfordshire were shut-down after giving 31 years service.

A video of these reliable transmitters is now on YouTube.
The YouTube description reads:

Following 31 years service, the last of the Brookmans Park Marconi B6034 50kW MF broadcast transmitters are closed down for the start of re-engineering to Nautel NX100s.

They had produced a total of 240,000 hours of reliable operation and this type of transmitter is still in service at other stations, including the similar 28kW B6046 LF version.

The B6034 is an Impedance Modulated transmitter with AMC using 2 of 4CX1500B tetrode valves in cathode follower mode (audio) and 2 of 4CX35000C tetrodes for the final RFs.

Watch Marconi B6034 MF Transmitters final shut-down at Brookmans Park Transmitting Station.

A History of Brookmans Park Transmitting Station
http://www.brookmans.com/history/transmitting/
transmittingstation.shtml

BBC Engineering - Brookmans Park
http://www.bbceng.info/Operations/transmitter_ops/
Reminiscences/brookmans_park/brookmans_park.htm

Google Maps - Brookmans Park
http://tinyurl.com/BrookmansPark