Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
![]() |
Source ........................................ ARRL HB - 1947
EIA Base ...................................... 7S
Source ........................................ ARRL HB - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.25 A
Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -6.0 V
Transconductance .............................. 10K µ
Plate Current ................................. 32 mA
Grid No. 2 Current ............................ 6.0 mA
Load Resistance ............................... 8.5K Ω
Power Output (approx) ......................... 3.75 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 19:20:50 -0700