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Source ........................................ RCA RC-13 - 1937
Glass type used as rf amplifier or detector in battery-operated receivers. Requires four-contact socket.
Source ........................................ RCA RC-13 - 1937
This type was made as a pentode (1B4P and a tetrode (1B4T). The 1B4 was a pentode.
Source ........................................ RCA RC-13 - 1937
Bulb .......................................... ST-12
Base Type ..................................... Small 4-Pin
EIA Outline ................................... 12-6
EIA Base ...................................... 4M
Top Cap ....................................... Small Metal
Mounting Position ............................. Any
Source ........................................ RCA RC-13 - 1937
Filament Voltage .............................. 2.0 DC V
Filament Current .............................. 0.06 A
Pentode
Source ........................................ RCA RC-13 - 1937
Input ......................................... 5.0 pf
Output ........................................ 11.0 pf
Grid to Plate ................................. 0.007 pf
Pentode
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 67.5 V
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C
Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 1000
Plate Resistance (approx) ..................... 1.5M Ω
Transconductance .............................. 650 µ
Plate Current ................................. 1.7 mA
Grid No. 2 Current ............................ 0.6 mA
Grid No. 1 Voltage for Ib ..................... 0 µa @ -8 V
Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 550
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 600 µ
Plate Current ................................. 1.6 mA
Grid No. 2 Current ............................ 0.7 mA
Grid No. 1 Voltage for Ib ..................... 0 µa @ -8 V
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Thu, 02 Feb 2023 04:26:14 -0700