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Voltage Radio Detector Converter ·Pentode-Triode

UCF80

Series-heater triode-pentode frequency changer for television equipment at frequencies extending to approximately 220 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
B9A
Socket code
B9A
Base pins
9
Nominal heater
27 V / 100 mA

Description

Series-heater triode-pentode frequency changer for television equipment to about 220 MHz.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B9A
Socket code
B9A
Base pins
9
Nominal heater voltage
27 V
Nominal heater current
100 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B9A - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max plate dissipation
1.7 W

Published Ferranti ratings and characteristics promoted where applicable; additional operating and application data retained as parameters.

Section 2

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max screen voltage
175 V
Max plate dissipation
1.7 W
Max screen dissipation
0.5 W

Published Ferranti ratings and characteristics promoted where applicable; additional operating and application data 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

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Triode

Application

  • Application

    Oscillator

SECTION 2

Pentode

Application

  • Application

    Television frequency changer / mixer

Other

  • Maximum intended frequency

    220 MHz

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 2

Pentode

Characteristics

  • Maximum operating frequency

    220 MHz

    ApplicationLimit

  • Heater current

    100 mA

    SeriesOperation

  • Heater voltage

    27 V

    SeriesOperation