Power - Beam (NOT sweep) ·BeamPower
8227
RCA 8227 Ceramolox forced-air-cooled ceramic-metal beam power tube for pulsed UHF RF amplification, delivering up to 17 kW peak RF output near 1215 MHz.
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 3.2 A
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
- 6.3 V
- Nominal heater current
- 3.2 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
Beam Power
- Max plate voltage
- 4000 V
- Max screen voltage
- 1000 V
- Max plate dissipation
- 125 W
RCA 8227 pulsed RF beam power section. Maximum DC plate 4000 V; maximum peak positive plate pulse 7000 V; screen voltage max 1000 V DC or pulse. Plate average dissipation 125 W. Maximum average screen INPUT 10 W and control-grid INPUT 5 W; these are not necessarily dissipation ratings, so dissipation fields remain unset. Peak plate current 6 A at 5 µs or 4.5 A at 10 µs; average plate current limits 0.05 A at 5 µs or 0.07 A at 10 µs. Typical at 1215 MHz, 5 µs pulses, duty factor 0.005: 4000 V DC plate, 1000 V peak screen pulse, 6 A peak plate, 0.03 A average plate, 0.003 A screen, 0.010 A grid1, 1250 W peak driver, 10 kW peak RF output (93% circuit efficiency). With 7000 V pulsed plate, 17 kW peak RF output (87% efficiency).
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.