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Voltage Dual Tetrode ·Tetrode-Tetrode

QQV026

RF power double tetrode designed for amplification or frequency multiplication to approximately 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

RF power double tetrode for amplifier or frequency-multiplier service to 500 MHz.

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: 600 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

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0105 S
Max plate voltage: 250 V
Max screen voltage: 200 V
Max plate dissipation: 3 W
Max screen dissipation: 1.5 W
Max cathode current: 45 mA

Two electrically similar RF tetrode sections; represented once under identical-section compression.

Section 2

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0105 S
Max plate voltage: 250 V
Max screen voltage: 200 V
Max plate dissipation: 3 W
Max screen dissipation: 1.5 W
Max cathode current: 45 mA

Second physical RF tetrode section; added to align rows with SectionCount.

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 01

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

Maximum operating frequency
500 MHz
RF operating frequency
500 MHz
ClassC
RF plate voltage
180 V
ClassC
RF screen voltage
180 V
ClassC
RF control-grid voltage
-20 V
ClassC
RF plate current per section
27.5 mA
ClassC
RF output power
5.8 W
ClassC
Plate dissipation maximum per section
3 W
Screen dissipation maximum per section
1.5 W
Heater-cathode voltage maximum
100 V

Capacitance

Plate-grid capacitance per section
0.16 pF
Push-pull input capacitance
3.8 pF
PushPull
Push-pull output capacitance
0.95 pF
PushPull
Grid-to-all capacitance per section
6.4 pF
Plate-to-all capacitance per section
1.6 pF

Characteristics

Transconductance
10.5 mA/V

Application

Application
RF power amplifier / oscillator / frequency multiplier