Tube cross-reference
EM84 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EM84 tuning indicator. Compare core specifications and verify every restriction before using a replacement.
Exact variations of EM84
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.
6FG6 Tuning Indicator
- Base
- Not recorded
- Socket
- B9A
- Base pins
- Not recorded
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.27 A
Replacement tubes for EM84
The following tubes are recorded as possible replacements for EM84. This direction does not establish that EM84 can replace them.
Tuning Indicator
The database records 6FG6 as a possible replacement forEM84.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Tuning Indicator | Tuning Indicator |
| Construction | Triode-TuningIndicator | Triode-TuningIndicator |
| Base | Noval | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.21 A | 0.27 A |
Where EM84 can be used as the replacement
In these recorded relationships, EM84 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EM84.
Tuning Indicator
The database records EM84 as a possible replacement for6FG6.
No special restrictions are recorded for this substitution.
| Specification | EM84 replacement | Original tube |
|---|---|---|
| Tube type | Tuning Indicator | Tuning Indicator |
| Construction | Triode-TuningIndicator | Triode-TuningIndicator |
| Base | Noval | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | Not recorded |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.21 A | 0.27 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 EM84 specifications →