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Tube Tinker — Electron Tube Database

Tube cross-reference

30C1 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 30C1 voltage - radio detector converter. Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 30C1

The following tubes are recorded as possible replacements for 30C1. This direction does not establish that 30C1 can replace them.

9A8

Voltage - Radio Detector Converter

American To Foreign

The database records 9A8 as a possible replacement for30C1.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage - Radio Detector ConverterVoltage - Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseB9A7AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage9 V9 V
Heater current0.3 A0.3 A

Where 30C1 can be used as the replacement

In these recorded relationships, 30C1 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 30C1.

9A8

Voltage - Radio Detector Converter

Foreign To American

The database records 30C1 as a possible replacement for9A8.

No special restrictions are recorded for this substitution.

Specification30C1 replacementOriginal tube
Tube typeVoltage - Radio Detector ConverterVoltage - Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseB9A7AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage9 V9 V
Heater current0.3 A0.3 A
9U8

Voltage - Radio Detector Converter

Foreign To American

The database records 30C1 as a possible replacement for9U8.

No special restrictions are recorded for this substitution.

Specification30C1 replacementOriginal tube
Tube typeVoltage - Radio Detector ConverterVoltage - Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseB9A9AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage9 V9 V
Heater current0.3 A0.3 A

Verify before substituting

Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.

View the complete 30C1 specifications →