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ID = 37888
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Tube type:  NTC-resistor (Thermistor -hot conductor) 
Identical to HL2/0,5c
Similar Tubes
Differences not known by us:
  HL2/0,5a ; HLT2/0,5a

Was used by Military and/or Government

Heißleiter NTC.


Usage in Models 1= 1938??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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