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Substitutes ................................... 12DL8
Source ........................................ ARRL HB - 1964
Source ........................................ ARRL HB - 1964
Miniature type used a detector, AVC rectifier and space-charge grid tetrode audio power amplifier driver. This tube is designed to operate where heater and plate voltage ar supplied directly from a 12 volt battery. Requires miniature 7-contact socket.
Source ........................................ ARRL HB - 1964
EIA Outline ................................... 6-3
EIA Base ...................................... 9HR
Source ........................................ ARRL HB - 1964
Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.375 A
Tetrode
Source ........................................ ARRL HB - 1964
Input ......................................... 9 pf
Output ........................................ 1 pf
Grid to Plate ................................. 12 pf
Class A Amplifier
Source ........................................ ARRL HB - 1964
Plate Voltage ................................. 12.6 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 18 Ω
Amplification Factor .......................... 7.6
Plate Current ................................. 6.8 mA
Load Resistance ............................... 1250 Ω
Power Output (approx) ......................... 0.005 W
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, 18 Aug 2022 16:58:48 -0700