Data set 01
1950 General Electric Transmitting Types
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Maximum full-rating frequency
165 MHz
Power - Beam (NOT sweep) ·BeamPower
2E30
Beam-power transmitting tetrode for communications and RF power service, designed to provide useful transmitter output at high frequencies.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7CQ
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6 V / 650 mA
Description
Directly heated beam-power amplifier with dual 6 V/3 V filament configurations for Class-A output service.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7CQ
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6 V
- Nominal heater current
- 650 mA
- Parallel heater voltage
- 3 V
- Parallel heater current
- 1.3 A
- Series capable
- No
7CQ - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 63000 Ω
- Transconductance
- 0.0037 S
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 10 W
- Max screen dissipation
- 2.5 W
- Max cathode current
- 60 mA
Promoted from the printed maximum-rating/characteristic columns; additional operating-point and capacitance data are retained in TUBE_SECTION_PARAMETER.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Capacitance
Input capacitance
9.6 pF
Section1
Output capacitance
14 pF
Section1
Grid-to-plate capacitance
0.18 pF
Section1
Other
Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Control-grid voltage
-20 V
ClassA
Plate current
40 mA
ClassA
Screen current
3.3 mA
ClassA
Load resistance
4500 Ω
ClassA
Power output
4.5 W
ClassA
Characteristic
Plate resistance
63000 Ω
ClassA
Transconductance
3700 µS
ClassA
Data set 03
195X Raytheon Special Purpose Tubes
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Maximum Grid 1 Voltage
-150 V
Maximum Grid 3 Voltage
0 V
Maximum Plate Current
60 mA
Maximum Grid 1 Current
3 mA
Drive Power
0.2 W
Output Power
7.5 W
Characteristic
Grid-to-Plate Capacitance
0.18 pF