Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
![]() | ![]() |
Source ........................................ RCA RC-27 - 1973
Bulb .......................................... T-9
EIA Outline ................................... 9-33
EIA Base ...................................... 8KB
Source ........................................ RCA RC-27 - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.2 A
Pentode
Source ........................................ RCA RC-27 - 1973
Input ......................................... 15.0 pf
Output ........................................ 9.0 pf
Grid to Plate ................................. 0.44 pf
Pentode
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 175 V
Grid No. 2 Voltage ............................ 175 V
Plate Dissipation ............................. 14.5 W
Grid No. 2 Dissipation ........................ 2.4 W
Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 145 V
Grid No. 2 Voltage ............................ 145 V
Grid No. 1 Voltage ............................ -16 V
Plate Resistance (approx) ..................... 8000 Ω
Transconductance .............................. 9500 µ
Plate Current ................................. 100 mA
Grid No. 2 Current ............................ 18 mA
Load Resistance ............................... 1K Ω
Power Output (approx) ......................... 5.6 W
Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 130 V
Grid No. 2 Voltage ............................ 130 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 120 Ω
Plate Resistance (approx) ..................... 8000 Ω
Transconductance .............................. 9500 µ
Plate Current ................................. 88 mA
Grid No. 2 Current ............................ 5.0 mA
Load Resistance ............................... 1K Ω
Power Output (approx) ......................... 3.5 W
Class A Amplifier
Source ........................................ RCA RC-27 - 1973
Plate Voltage ................................. 130 V
Grid No. 2 Voltage ............................ 130 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 75 Ω
Plate Resistance (approx) ..................... 8000 Ω
Transconductance .............................. 9500 µ
Plate Current ................................. 150 mA
Grid No. 2 Current ............................ 7.2 mA
Load Resistance ............................... 1.6K Ω
Power Output (approx) ......................... 7.0 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, 30 Jun 2022 04:35:21 -0700