QY5800

High-power RF tetrode designed for Class-C and single-sideband Class-AB1 linear-amplifier service. It supports both efficient carrier power and linear communications amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7.5 V / 22.6 A

Description

The Mullard QY5800 is a high-power RF tetrode for Class C and SSB Class AB1 linear-amplifier service.

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: 7.5 V
Nominal heater current: 22.6 A
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

Tetrode

X-ray radiationInterelectrode capacitances

Transconductance: 0.01 S
Max plate voltage: 5500 V
Max screen voltage: 800 V
Max plate dissipation: 800 W

High-power RF tetrode for Class C and SSB Class AB1 linear-amplifier service.

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

Characteristics

Input Capacitance
47.6 pF
Output Capacitance
9.5 pF
Plate-Grid Capacitance
0.1 pF
Transconductance
10000 uS

Other

Maximum Plate Voltage
5500 V
Maximum Plate Dissipation
800 W
RF Output Power
2400 W
ClassC; 30MHz
PEP Output Power
1300 W
ClassAB1; SSB; 30MHz