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Voltage Radio Detector Converter ·Octode

CK3

Four-beam octode frequency converter for radio receivers, combining oscillator and mixer action within one multi-grid valve. It was designed specifically for superheterodyne frequency-changing service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
P8A
Base pins
8
Nominal heater
13 V / 200 mA

Description

CK3 is a four-beam octode frequency converter. The supplied Philips datasheet was read for heater data, operating characteristics, limiting ratings, and section-level electrical information.

Socket description

European 8-pin side-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
P8A
Base pins
8
Nominal heater voltage
13 V
Nominal heater current
200 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

Octode

X-ray radiationInterelectrode capacitances
Transconductance
0.004 S
Max plate voltage
300 V
Max screen voltage
150 V
Max plate dissipation
1 W
Max cathode current
23 mA

Four-beam octode frequency converter

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

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Octode

Other

  • Maximum screen dissipation

    1 W

  • Maximum oscillator anode voltage

    150 V

  • Maximum oscillator anode dissipation

    1 W