Data set 01
1938 Raytheon
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Power Output
13 W
ClassB;PushPull;TwoTubes
Power - Triode ·Triode-Triode
RK34
Twin power triode for Class B audio-frequency amplification and RF oscillator service. Its paired sections support push-pull audio output in the low-tens-of-watts range while retaining useful radio-frequency capability.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- MEDIUM7
- Base pins
- 7
- Nominal heater
- 6.3 V / 800 mA
Description
Twin triode for Class B audio-frequency power amplification and RF oscillator service.
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
- 6.3 V
- Nominal heater current
- 800 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
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2950 Ω
- Transconductance
- 0.0044 S
- Amplification factor
- 13
- Max plate voltage
- 300 V
- Max plate dissipation
- 5 W
Published ratings/characteristics promoted where directly applicable; identical twin sections are compressed to one section row.
Section 2
Triode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
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
6.3 V
Published nominal value
Heater or filament current
800 mA
Published nominal value
Transconductance
4400 µS
Published characteristic
Other
Maximum plate dissipation
5 W
Published maximum or highest stated rating
Audio power output
13 W
ClassB; TwoTriodes
Audio power output
0.8 W
ClassA; TwoTriodesInParallel
Data set 03
195X Raytheon Special Purpose Tubes
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum Combined Plate Current
80 mA
BothSectionsCombined
Maximum Combined Grid 1 Current
20 mA
BothSectionsCombined
Maximum Combined Plate Dissipation
10 W
BothSectionsCombined
Drive Power
1.8 W
BothSectionsCombined
Output Power
16 W
BothSectionsCombined
Characteristic
Grid-to-Plate Capacitance
2.4 pF
RepresentativeSection