Tube: 1B40
External Cavity tube, 1KW at 1075 to 1096MHz.
Tube: USN-5J29
5J29 is a split anode magnetron. This device is water cooled, the water flowing round the metal loop.
Thyratrons
An article on Thyratrons and a film showing three energized tubes : the 714, the 309/FG17 and the ELC1B.