Commercial HF radio receiver.
Used by the IDF during the War of Independence (1948). Used by fixed stations in Avinoam and Tamar networks.
Received AM (Amplitude Modulation) or CW (Morse), 0.55 to 55 MHz.
Vacuum tube technology.
Worked with 110 Volts AC supply (220 volts supply using step down transformer).
Manufactured by National Radio Company, USA.
