EC 86 valve

Culot Noval, 9 pin miniature (USA pico-9) B9A Used for radio/TV reception etc. Heating Vf 6,3 Volt / Se 0.175 Ampère / Indirect / Voltage specified AC/DC Description RF pipe up to 800 MHz. Info Siegfried Neumann: Start of production in series in Ulm in 1959 with 14102 pieces and in Berlin in 1960 with 37549 pieces. Production ended in Ulm in 1962 and Berlin in 1972. In Ulm 158,248 units were built and in Berlin 1.666.122 unit. Source: Production books of factories Telefunken berlin and Ulm. Note: in the factory registers of Telefunker only the valves actually sold are listed; pre-series were not recorded. Pre-series were printed differently, with bold and without logo Telefunken (star), but also with an adhesive (laboratory sample).