I have recently started spending a lot of time in University of Tartu Space Technology lab. RF boards in the trash box look so beautiful that I just had to make pictures. Since I don't know what all these boards to, the descriptions can contain errors.
Overview of the RF board.
Random inputs? and some filtering.
One of the big RF amplifier chips on the board.
The other RF amplifier, even bigger than previous one.
Output filter? or amplifier? The component is mounted on gigantic heatsink on the bottom of the board.
Power circuit of the board.
Old RF filter board.
Overview of the board.
Output part of some old RF board.
Middle section of the same board.
Input side.
Overview of 3G telephone mast PCB. Golden stripes show where the metal shielding connected to the board.
Golden bottom side of the same board.
Random
Probably some input filtering
Power supply of the telephone mast
Beefy amplifiers
Another switching regulator part
Awesome cascaded filters
Weird add on card, looks like magnetic-core memory
Some more magnetic-core memory