Tube cross-reference
6J7GT alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6J7GT voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6J7GT
The following tubes are recorded as possible replacements for 6J7GT. This direction does not establish that 6J7GT can replace them.
Voltage Pentode
The database records EF37 as a possible replacement for6J7GT.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | 7R | Not recorded |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.2 A |
Voltage Tetrode
The database records KTW63 as a possible replacement for6J7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Tetrode |
| Construction | Pentode | Tetrode |
| Base | 7R | Not recorded |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Pentode - Remote Cutoff (single)
The database records KTZ63 as a possible replacement for6J7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7R | Not recorded |
| Socket | IO | Not recorded |
| Base pins | 7 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6J7 as a possible replacement for6J7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | UX7 |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6J7G as a possible replacement for6J7GT.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | UX7 |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6W7G as a possible replacement for6J7GT.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.15 A |
Where 6J7GT can be used as the replacement
In these recorded relationships, 6J7GT is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6J7GT.
Voltage Pentode
The database records 6J7GT as a possible replacement forEF37.
- Parallel heater circuits only
| Specification | 6J7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | 7R | Not recorded |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.2 A |
Voltage Tetrode
The database records 6J7GT as a possible replacement forKTW63.
No special restrictions are recorded for this substitution.
| Specification | 6J7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Tetrode |
| Construction | Pentode | Tetrode |
| Base | 7R | Not recorded |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6J7GT as a possible replacement for6J7.
No special restrictions are recorded for this substitution.
| Specification | 6J7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | UX7 |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6J7GT as a possible replacement for6J7G.
No special restrictions are recorded for this substitution.
| Specification | 6J7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | UX7 |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 6J7GT as a possible replacement for6W7G.
- Parallel heater circuits only
| Specification | 6J7GT replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | 7R | 7R |
| Socket | IO | IO |
| Base pins | 7 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.15 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 6J7GT specifications →