Alternatives & variations Download PDF datasheet

C324

Cunningham screen-grid tetrode for RF amplification and detector service in radio receivers. Its screened structure improves high-frequency gain and stability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: UY5
Base pins: 5
Nominal heater: 2.5 V / 1.75 A

Description

C324: Cunningham screen-grid RF amplifier/detector. The complete bulletin was read for construction, ratings, circuit recommendations, and operating characteristics.

Socket description

Medium 5-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: UY5
Base pins: 5
Nominal heater voltage: 2.5 V
Nominal heater current: 1.75 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

Plate resistance: 400000 Ω
Max plate voltage: 180 V
Max screen voltage: 75 V

Published ratings and characteristic constants promoted where applicable; operating recommendations retained as parameters.

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

1931 Cunningham Radio Tubes

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristics

Filament/heater voltage
2.5 V
Filament/heater current
1.75 A
Plate resistance
400000 ohm
Grid-plate capacitance
0.01 pF

Other

Maximum plate voltage
180 V
Maximum screen-grid voltage
75 V