Data set 01
1938 Raytheon
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
RFOutputPower
96 W
ClassC;Telephony
Application
Application
RFPower_Oscillator_FrequencyMultiplier text
Power - Triode ·Triode
RK51
Directly heated thoriated-tungsten Raytheon transmitting triode for RF amplification, oscillator service, and frequency multiplication. Approximately 60 W plate dissipation and 1.5 kV capability suit moderate professional transmitting stages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- UX4
- Base pins
- -
- Nominal heater
- 7.5 V / 3.75 A
Description
Directly heated thoriated-tungsten triode RF power amplifier, oscillator and frequency-multiplier tube.
Socket description
Medium-shell UX 4-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- UX4
- Base pins
- -
- Nominal heater voltage
- 7.5 V
- Nominal heater current
- 3.75 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
Triode
X-ray radiationInterelectrode capacitances
- Amplification factor
- 20
- Max plate voltage
- 1500 V
- Max plate dissipation
- 60 W
Published ratings/characteristics promoted where directly applicable; identical twin sections are compressed to one section row.
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
1938 Raytheon Amateur
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater or filament voltage
7.5 V
Published nominal value
Heater or filament current
3.75 A
Published nominal value
Amplification factor
20
Published characteristic
Other
Maximum plate dissipation
60 W
Published maximum or highest stated rating
RF power output
96 W
ClassC
Peak power output
384 W
ClassC; Telephony