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Russian audiophile 4P1L tube with direct heating & lowest anode voltage.
The pentode is fine up to 100 Mc/s. SVETLANA plant. Equivalent to the 4L1S / 4LS1. Copy of RL2 / 4P6 Wermacht tubes.
Name: 4P1L;
Type: pentode;
Application: oscillation and power amplification up to 100MHz;
Cathode type: oxide,direct heating;
Envelope: glass;
Mass, g: 35;
Filament voltage, V: 2,1/4,2;
Filament current, A: 0,65/0,325;
Anode voltage, V: 150;
Anode current, A: 0,06;
Anode power, W: 7,5;
Grid2 voltage, V: 150;
Grid3 voltage, V: 0;
Steepness, mA/V: 4,5-7,8;
Microphonic noise, mV: 500;
Socket type: rsh7.
NOS & NIP
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