6K1ZH

The 6K1ZH is a Russian high-frequency pentode with distinctive acorn-shaped glass construction and radial terminals. Intended for RF voltage amplification, it employs an indirectly heated oxide cathode, operates from a 6.3-volt heater supply, and offers compact construction suited to high-frequency signal circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 150 mA

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: 6.3 V
Nominal heater current: 150 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

Pentode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0017 S
Max plate dissipation: 1.8 W

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

2026 Russian Receiving

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

Plate Voltage
250 V
Screen Voltage
100 V
Grid Bias
-3 V
Plate Current
7 mA