Data set 01
1938 Raytheon
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
RFOutputPower
22 W
RFPower
Power - Pentode (NOT beam) ·Pentode
RK44
Heater-type transmitting pentode designed for RF power-amplifier and oscillator service. It combines radio-frequency generation and output amplification in professional or amateur transmitters.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- MEDIUM7
- Base pins
- 7
- Nominal heater
- 12.6 V / 700 mA
Description
Heater-type pentode RF power amplifier and oscillator.
Socket description
Medium 7-contact transmitting-tube base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- MEDIUM7
- Base pins
- 7
- Nominal heater voltage
- 12.6 V
- Nominal heater current
- 700 mA
- 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
Pentode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 500 V
- Max screen voltage
- 200 V
- Max plate dissipation
- 12 W
- Max screen dissipation
- 5 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
Pentode
Characteristics
Heater or filament voltage
12.6 V
Published nominal value
Heater or filament current
700 mA
Published nominal value
Other
Maximum plate dissipation
12 W
Published maximum or highest stated rating
Carrier power output
5.5 W
ClassB; Telephony
Peak power output
22 W
ClassB; Telephony