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Tube Substitutions for:
01A
Triode Detector - Amplifier

Type	Substitutes	Base Diagram
01A	12A, 112A
Web References	01A (RCA) @ Franks Electron Tubes 01A (RCA (HB3)) @ Franks Electron Tubes 01A (Sylvania) @ Franks Electron Tubes 01A @ RadioMuseum.org

Raytheon Type 01A
TRIODE - DETECTOR OR AMPLIFIER


MECHANICAL DATA

Bulb	S-14
Basing	4D

ELECTRICAL DATA

FILAMENT CHARACTERISTICS

Filament Voltage	5.0	Volts
Filament Current	0.25	Amps

DIRECT INTERELECTRODE CAPACITANCES

Grid to Plate	8.1	��f
Input	3.1	��f
Output	2.2	��f

MAXIMUM RATINGS (Design-Center Values)
Amplifier - Class A

Plate Voltage	90	135	Volts
Grid Bias	-4.5	-9.0	Volts
Amplification Factor	8.0	8.0	x
Plate Resistance	11000	10000	Ohms
Transconductance	725	800	�mhos
Plate Current	2.5	3.0	Ma

Detector - Biased Type

Plate Voltage	90	135	Volts
Grid Bias	-7.5	-9.0	Volts
Plate Current (no signal)	0.2	0.2	Ma

Detector - Grid Leak Type

Plate Voltage	45	Volts
Grid Return to positive filament	-	-
Grid Leak Resistance	0.25 to 5	Megohm
Grid Condenser	250	��f

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