For sale NEC (Japan) PCU-920SS type 900W out UHF analog TV  RF amplifiers original, w/h any modification.
RF input : 5mW. Output: 900W. DC supply 28V.(was in use with NEC 28V/180A switching PS)
Dimensions:500x830x50mm, weight: 15kg
Frq: CCIR 34ch.( 550MHz)
Full documentation is available.
The RF amplifiers for sale complete, or in parts(3x300W amplifier units,30/150W driver, 5mW/30W driver panels etc)!
Modification is possible to another frq.
Lot of pieces is available.