Tube cross-reference
8GX7 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 8GX7 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 8GX7
The following tubes are recorded as possible replacements for 8GX7. This direction does not establish that 8GX7 can replace them.
Specialized - Ignitron
The database records 8GJ7 as a possible replacement for8GX7.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Specialized - Ignitron |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | 9QA |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 7.7 V | 8.6 V |
| Heater current | 0.3 A | 0.3 A |
Where 8GX7 can be used as the replacement
In these recorded relationships, 8GX7 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 8GX7.
Specialized - Ignitron
The database records 8GX7 as a possible replacement for8GJ7.
No special restrictions are recorded for this substitution.
| Specification | 8GX7 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Specialized - Ignitron |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | Not recorded | 9QA |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 7.7 V | 8.6 V |
| Heater current | 0.3 A | 0.3 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 8GX7 specifications →