6F1P = 6U8 = ECF82 tube. HF triode-penthode
The 6F1P triode-pentode is designed for use as a heterodyne, high-frequency voltage converter and amplifier and in pulse circuits of television receiver scanning networks.
The 6F1P triode-pentodes are miniature devices enclosed in glass bulb and provided with nine rigit leads and an indirectly heated oxide-coated cathode.
The 6F1P triode-pentodes are resistant to ambient temperature from -60 to +70°C and relative humidity of 95 to 98% at +40°C, as well as to vibration with an acceleration of 25 g.
All tubes new, military equipment and have "OTK" mark. Near equivalent: 6U8 and ECF82.
The tube is manufactured by the ORZeP, Orel, Russia.
Application: HF oscillation, amplification, conversion
Cathode type: oxide, indirect heating
Envelope: glass, miniature
Mass, g: 20
Filament voltage, V: 6,3
Filament current, A: 0,38-0,46
Anode voltage, V: triode-100/penthode-170
Anode current, A: triode-0,013/penthode-0,01
Anode power, W: triode-1,5/penthode-2,5
Grid1 voltage, V: triode-minus2/penthode-minus2
Grid2 voltage, V: 170
Steepness, mA/V: triode-5/penthode-6
Microphnic noise, mV: 200
All datasheets here.