Data set 01
198X Shuguang
Published operating points and test conditions from this source.
SECTION 1
Heptode
Characteristics
Heater voltage
6.3 V
Nominal
Heater current
300 mA
Nominal
Voltage Radio Detector Converter ·Heptode
6A2
Chinese heptode frequency changer for superheterodyne radio receivers. Its multi-grid structure combines oscillator and mixer functions, translating incoming RF signals to the receiver intermediate frequency from conventional receiving-equipment supplies.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 300 mA
Description
Indirectly heated oxide-cathode converter tube intended for frequency conversion.
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
- 300 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
Heptode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 330 V
- Max screen voltage
- 110 V
- Max plate dissipation
- 1.1 W
- Max screen dissipation
- 1.1 W
- Max cathode current
- 14 mA
Chinese Shuguang 6A2 indirectly heated oxide-cathode heptode frequency converter. Original Chinese datasheet explicitly gives MAXIMUM anode 330 V, grids 2+4 110 V, plate dissipation 1.1 W, grids 2+4 dissipation 1.1 W and cathode current 14 mA. Typical converter anode 250 V, screen (grids 2+4) 100 V, grid-3 negative bias ~-1.5 V, plate current about 3 mA; oscillator conductance and conversion transconductance are distinct from static intrinsic gm and were NOT promoted. Input/coupling interelectrode capacitances documented. Source OCR on heater current ambiguous relative to parent 6.3 V 0.3 A; existing parent heater current held pending independent verification. Single physical Heptode 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.