NJ7P SQL Tube Database Query

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7B8
Pentagrid Converter

EIA Base & Outline

EIA Base: 8XEIA Bulb: 9-30

Substitute Data

Substitutes ................................... 7A8
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass lock-in type used as frequency converter in superhetrodyne circuits. Requires lock-in socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Lock-in 8-Pin
EIA Outline ................................... 9-30
EIA Base ...................................... 8X
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Source ........................................ RCA RC-15 - 1947
For other characteristics and typical operation, see 6A8

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Thu, 30 Jun 2022 15:06:12 -0700