Alternatives & variations Download PDF datasheet

QQV0416

UHF double tetrode designed for amplifier, frequency-tripler, and oscillator service to approximately 960 MHz. Its twin sections support compact UHF power generation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B8G
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

UHF double tetrode for amplifier, frequency-trebler, and oscillator service to 960 MHz.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B8G
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: 6.3 V
Parallel heater current: 600 mA
Series capable: Yes

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

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0105 S
Max plate voltage: 400 V
Max screen voltage: 250 V
Max plate dissipation: 10 W
Max screen dissipation: 1.75 W
Max cathode current: 50 mA

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

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
960 MHz
RF operating frequency
960 MHz
ClassC
RF plate voltage
250 V
ClassC
RF screen voltage
160 V
ClassC
RF control-grid voltage
-15 V
ClassC
RF plate current per section
35 mA
ClassC
RF output power
7 W
ClassC
RF operating frequency
960 MHz
ClassC,ICAS
RF plate voltage
250 V
ClassC,ICAS
RF screen voltage
170 V
ClassC,ICAS
RF control-grid voltage
-15 V
ClassC,ICAS
RF plate current per section
40 mA
ClassC,ICAS
RF output power
8 W
ClassC,ICAS
RF operating frequency
960 MHz
ClassC,FrequencyTripler
RF plate voltage
250 V
ClassC,FrequencyTripler
RF screen voltage
150 V
ClassC,FrequencyTripler
RF plate current per section
37.5 mA
ClassC,FrequencyTripler
RF output power
2.75 W
ClassC,FrequencyTripler
Bulb temperature maximum
220 C
Pin temperature maximum
220 C

Capacitance

Plate-grid capacitance per section
0.145 pF
Push-pull input capacitance
4.5 pF
PushPull
Push-pull output capacitance
1.35 pF
PushPull

Characteristics

Transconductance
10.5 mA/V
Grid1-to-grid2 amplification factor
26

Application

Application
RF power amplifier / oscillator / frequency multiplier