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Voltage Radio Detector Converter ·Pentode-Triode

9U8

PCF82/9U8 triode-pentode frequency changer for VHF television receiver service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9AE
Socket code: B9A
Base pins: 9
Nominal heater: 9 V / 300 mA

Description

Explicit 9U8 co-designation on the PCF82/9U8 VHF television triode-pentode frequency-changer sheet.

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: 9AE
Socket code: B9A
Base pins: 9
Nominal heater voltage: 9 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9AE - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN12P	B	P — Plate (Anode) Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN21G1	A	G1 — Control Grid Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN31G2	A	G2 — Screen Grid Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN4H	—	H — Heater Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN5H	—	H — Heater Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN61P	A	P — Plate (Anode) Chart transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN71G3	A	G3 — Suppressor GridGroup 9AE7 Source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN7IS	A	IS — Internal ScreenGroup 9AE7 Source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN71K	A	K — CathodeGroup 9AE7 Source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN82K	B	K — Cathode Source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE
PIN92G1	B	G1 — Control Grid Source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9AE

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5000 Ω
Transconductance: 0.0085 S
Amplification factor: 40
Max plate voltage: 250 V
Max plate dissipation: 1.5 W
Max cathode current: 20 mA

Published ratings and characteristics promoted from the approved German source.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 400000 Ω
Transconductance: 0.0052 S
Max plate voltage: 250 V
Max screen voltage: 110 V
Max plate dissipation: 2.5 W
Max screen dissipation: 0.5 W
Max cathode current: 25 mA

Published ratings and characteristics promoted from the approved German source.

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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
450 mA
Nominal
Maximum Plate Voltage
300 V
Maximum Plate Dissipation
1.5 W
Maximum Cathode Current
20 mA

Characteristic

Transconductance
8500 µS
Typical
Amplification Factor
55
Typical
Plate Resistance
18000 ohm
Typical

SECTION 2

Pentode

Other

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
450 mA
Nominal
Maximum Plate Voltage
300 V
Maximum Screen Voltage
300 V
Maximum Plate Dissipation
2.5 W
Maximum Screen Dissipation
0.5 W
Maximum Cathode Current
25 mA

Characteristic

Transconductance
5200 µS
Typical
Plate Resistance
300000 ohm
Typical

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Application
VHF oscillator
TriodeSection

SECTION 2

Pentode

Characteristic

Application
VHF mixer
PentodeSection
Referenced Characteristics
Type ECF82/6U8
Source explicitly refers to ECF82/6U8 for further characteristics

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 2

Pentode

Other

Maximum plate voltage
300 V
Published handbook rating
Maximum screen voltage
150 V
Published handbook rating
Plate voltage
250 V
ClassA
Screen voltage
110 V
ClassA
Plate current
10 mA
ClassA
Screen current
3.5 mA
ClassA
Pentode cathode resistor
68 ohm
Pentode Section ClassA
Triode plate voltage
150 V
Triode Section ClassA
Triode cathode resistor
56 ohm
Triode Section ClassA
Triode plate current
18 mA
Triode Section ClassA

Characteristic

Plate resistance
400000 ohm
Published handbook characteristic
Transconductance
5200 µS
Published handbook characteristic
Heater/filament voltage
9.45 V
Published heater/filament rating
Heater/filament current
300 mA
Published heater/filament rating
Triode plate resistance
5000 ohm
Triode Section
Triode transconductance
8500 µS
Triode Section
Triode amplification factor
40
Triode Section

Data set 04

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater Voltage
9 V
Heater Current
300 mA
Maximum Intended Frequency
220 MHz
FrequencyChanger