Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
Oscillator
SECTION 2
Heptode
Application
Application
Frequency converter / mixer
Voltage Radio Detector Converter ·Heptode-Triode
6DS8
Rogers 6DS8 triode-heptode frequency converter for low-voltage automobile radios, 6.3 V 300 mA heater.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9CA
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
Triode-heptode frequency converter for car-radio receivers.
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
- 9CA
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9CA - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN11G2 | A | G2 — Screen GridGroup 9CA1 EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN11G4 | A | G4 — Fourth GridGroup 9CA1 EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN21G1 | A | G1 — Control Grid EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN31G5 | A | G5 — Fifth GridGroup 9CA3 EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN3IS | A | IS — Internal ScreenGroup 9CA3 EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN3K | A | K — CathodeGroup 9CA3 EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN4H | — | H — Heater EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN5H | — | H — Heater EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN61P | A | P — Plate (Anode) EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN71G3 | A | G3 — Suppressor Grid EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN82P | B | P — Plate (Anode) EIA source transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9CA |
| PIN92G1 | B | G1 — Control Grid EIA label preserved; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9CA |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0022 S
- Amplification factor
- 20
- Max plate voltage
- 250 V
- Max plate dissipation
- 0.8 W
- Max cathode current
- 6.5 mA
Rogers 6DS8 triode portion of triode-heptode car-radio converter. Max operating plate 250 V, dissipation 0.8 W, cathode current 6.5 mA. Typical at Va 25 V Ia 2 mA gm 0.0022 A/V mu 20; at Va 12.6 V gm 0.0014 A/V mu 18.3; at 6.3 V gm 0.0008 A/V mu 14.6. Separate zero-current supply voltage 550 V, not operating maximum. Cgp 1.0 pF, input 2.6 pF, output 2.1 pF.
Section 2
Heptode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 50 V
- Max cathode current
- 5 mA
Rogers 6DS8 heptode converter portion. Max operating plate 50 V, cathode current 5 mA, screen grids2/4 max 50 V; zero-current supply 550 V separate. At Va 25 V and screens 25 V as converter: conversion conductance 450 µmhos, plate current 550 µA, rp 0.5 MΩ. As RF/IF amplifier at 25 V: transconductance 1500 µmhos (0.0015 A/V), plate current 1.25 mA, rp 0.2 MΩ. Conversion gm and amplifier gm must not be confused; no single promoted gm. Interelectrode capacitances in Rogers sheet.
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.