2X YO 186 ~ RE 604 TELEFUNKEN POWER TRIODE YEAR 1940 FULLY TESTED WITH RPG4/3
TEST RESULTS EMISSION 30mA (WHERE 17mA = 100%)
POWER TRIODE TESTED WITH FUNKE RPG4/3 TUBE TESTER
MONO PLATE
STRONG TEST RESULTS EMBEDDED ON PICTURE
MADE IN RUSSIA 1940's FINEST RUSSIAN TUBE VALVE LAMPE ROHRE
box 44