Tube-number record
T986D, T986Y, T986Z
0 archive entries
T986D, T986Y, T986Z is a tube type in the TubeDatabase archive (class: Radar P.P.I. Display Tube). Recorded specifications: brand English Electric Valve Co. Ltd., construction Display / CRT, base Plastic/Metal, socket CRT base (B8H), and maximum plate voltage 18000 V. The archive does not yet hold a photographed example of this type.
BrandEnglish Electric Valve Co. Ltd.
ClassRadar P.P.I. Display Tube
BaseCRT base (B8H)
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialPlastic/Metal
SectionsSingle
Filament / Heater
Heater NotesSuitable for series or parallel operation. Surge voltage must not exceed 9.5 V.
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| P.P.I. Display | 14000 V | — | — | — | 0.015 mA |
Application Notes
Intended primarily for marine radar P.P.I. displays. Requires cavity cap B.S.448-CT8 for Anode 2 and Anode 4 connections.
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