This is pirate transceiver for medium waves MW (1600 -1800 KHz). It’s transmitter and receiver in one unit, simultaneously changing frequency during transmit and receive. In PA it has three EL509 / EL519 / 6KG6 / 6KG6A sweep tubes with 900 Volts on plates, modulator is push pull with two EL84 / 6BQ5 and legendary “sheet-beam” 7360 tube was used as a mixer.
This is AM TX/RX for 1600 – 1800 KHz!!! Made in Pancevo, Serbia by Patuljak : )