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Tube Tinker — Electron Tube Database

Tube cross-reference

EM80 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the EM80 tuning indicator. Compare core specifications and verify every restriction before using a replacement.

Exact variations of EM80

These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.

  • 6BR5

    Tuning Indicator

    Base
    Not recorded
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.3 A
  • 6E1P

    Tuning Indicator

    Base
    Not recorded
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.3 A

Replacement tubes for EM80

The following tubes are recorded as possible replacements for EM80. This direction does not establish that EM80 can replace them.

6BR5

Tuning Indicator

American To Foreign

The database records 6BR5 as a possible replacement forEM80.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeTuning IndicatorTuning Indicator
ConstructionTriode-TuningIndicatorTriode-TuningIndicator
BaseB9ANot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.3 A0.3 A

Where EM80 can be used as the replacement

In these recorded relationships, EM80 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EM80.

6BR5

Tuning Indicator

Foreign To American

The database records EM80 as a possible replacement for6BR5.

No special restrictions are recorded for this substitution.

SpecificationEM80 replacementOriginal tube
Tube typeTuning IndicatorTuning Indicator
ConstructionTriode-TuningIndicatorTriode-TuningIndicator
BaseB9ANot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.3 A0.3 A
6DA5

Tuning Indicator

Foreign To American

The database records EM80 as a possible replacement for6DA5.

No special restrictions are recorded for this substitution.

SpecificationEM80 replacementOriginal tube
Tube typeTuning IndicatorTuning Indicator
ConstructionTriode-TuningIndicatorTriode-TuningIndicator
BaseB9ANot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 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 EM80 specifications →