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Tube Substitutions for:
1LN5
Sharp Cutoff RF Pentode

Type	Substitutes	Base Diagram
1LN5	1LG5, 1LC5, 1LC5
Web References	1LN5 (RCA (HB3)) @ Franks Electron Tubes 1LN5 (Tung-Sol) @ Franks Electron Tubes 1LN5 @ RadioMuseum.org

Sylvania Type 1LN5
SHARP CUTOFF R F PENTODE


MECHANICAL DATA

Bulb	T-9
Outline	9-30
Base1	Lock-in 8-Pin
Basing	7AO
Mounting Position	Any

ELECTRICAL DATA

FILAMENT CHARACTERISTICS

Filament Voltage D C	1.4	Volts
Filament Current	50	Ma
Filament Voltage D C (Abs Max)	1.6	Volts

TYPICAL OPERATION

Plate Voltage	90	Volts
Grid No. 2 Voltage	90	Volts
Grid No. 1 Voltage1	0	Volts
Plate Current	1.6	Ma
Grid No. 2 Current	0.35	Ma
Transconductance	800	�mhos
Plate Resistance (approx.)	1.1	Megohm
Grid No. 1 Bias for Gm=10�mhos (approx.)	-4.5	Volts

NOTES:

1	Negative filament return to Pin 8.
2	Sylvania type 1U4 is recommended for use in new equipment.

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