Data set 01
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
measured with respect to a centerline Diameter A
0.024 in
measured with respect to a centerline Diameter A - 0,024 inches
Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode
GL7985
Water- and forced-air-cooled high-power UHF tetrode for grounded-grid RF amplifier or oscillator service. Combined cooling supports substantial transmitter dissipation.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.7 V / 7 A
Description
Water- and forced-air-cooled high-power UHF tetrode for grounded-grid RF amplifier or oscillator service.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 6.7 V
- Nominal heater current
- 7 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
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
Tetrode
X-ray radiationInterelectrode capacitances
- Amplification factor
- 10
- Max plate voltage
- 5500 V
- Max plate dissipation
- 3500 W
Promoted fields mapped from printed ratings/characteristics headings; specialized published data retained in parameter rows.
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.