SHOWCASE 7R. CELL 7-31

PK-10 (ПК-10) - USSR field switchboard housed in a wooden cabinet. PK-10 supported ten telephone lines - five with magneto signaling and five more with phonetic signaling. Two similar PK-10 sets could be joined to provide for 20 subscriber lines. Our sample was manufactured in 1945. The PK-10 field switchboards have to be controlled by any UNA-FI telephone set with phonetic and magneto signaling capabilities.