NJ7P Tube Database Search

3D6
UHF Tetrode

Base & Bulb ( ARRL HB -1947)

Substitute Data

Preferred Substitutes ......................... 1299
Substitutes ................................... 3LE4 3LF4

Mechanical Data

Bulb .......................................... T-9
Base .......................................... Lock-In 8-Pin
Outline ....................................... 9-30
EIA Base ...................................... 6BB

Electrical Data

Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.22 A

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -6 V
Transconductance .............................. 2200 µ
Plate Current ................................. 5.7 mA
Grid No. 2 Current ............................ 0.7 mA
Load Resistance ............................... 13K Ω
Power Output (approx) ......................... 0.0005 W

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