Low frequency amplifier "UP-200".
Amplifying and broadcasting equipmentSince 1931, the UP-200 low-frequency amplifier has been produced by plant No. 2 NKPT. The "UP-200" amplifier (analogue of the "VUP-30" amplifier) is intended for powerful radio broadcasting units. The amplifier has a nominal output power of 200 W and is pumped to such a power by an amplifier of the "UP-3N" type.