NJ7P SQL Tube Database Query

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1F7G
Twin Diode - Sharp-Cutoff Pentode

EIA Base & Outline

Substitute Data

Substitutes ................................... 1F6
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass type used as combined detector, amplifier, and avc tube in battry-operated receivers. Requires an octal socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... ST-12
Base Type ..................................... Octal
EIA Outline ................................... 12-8
EIA Base ...................................... 7AF

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 2.0 DC V
Heater Current ................................ 0.06 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -1.5 V
Plate Current ................................. 2.2 mA
Grid No. 2 Current ............................ 0.7 mA

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, 30 Jun 2022 07:00:14 -0700