Hi All ,

Wide Band Distribution amplifiers (4-8MHz for example) at Hanslope Park SCU3 monitoring station used 807 valves to drive several HRO recievers, there were 32 banks of 2, when I was there.They were designed by Dud Charman, who was also responsible for the Rhombic aerials of which there were many. Obviously capable of handling large signals without  inter-mod (esential when we were looking for the weakest ones ) and of driving many feet of coax cables via large plug/socket switching unit called "the Concentrator",for what reason I dont know..  

Laurie G3AQC ex SCU3