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Voltage Tetrode ·Tetrode

KTW63

Variable-mu kinkless high-frequency tetrode for RF and IF amplification, providing controlled cutoff for receiver gain regulation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
IO
Base pins
8
Nominal heater
6.3 V / 300 mA

Description

Variable-mu kinkless HF tetrode for HF and IF amplification.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
IO
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
300 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

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V

Promoted values mapped from printed rating/approximate-data tables; additional operating points and capacitances 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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Grid-Anode Capacitance

    0.0035 pF

  • Anode-Cathode Capacitance

    10 pF

  • Grid-Cathode Capacitance

    4.9 pF

  • Typical Anode Voltage

    250 V

  • Typical Screen Voltage

    100 V

  • Typical Grid Bias

    -3 V

  • Grid Base Fixed Screen

    40 V

  • Grid Base with 50kohm Screen Feed

    150 V