Circa Early-Mid 1980's; A Pye F300AM 1/4Kw transmitter found at many Home Office Sites throughout the UK can be seen to the left of this picture at West Nab Radio Site for SYP Channel 1. To the right is a pair of T55 Marconi 100 watt transmitters (thanks to Michael Prescott for the model number memory jog) used for SYP Channel 2 scheme plus power supplies.
