Tube cross-reference
1294 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1294 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 1294
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.
1R4 Rectifier - Half Wave
- Base
- 4AH
- Socket
- Not recorded
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 1.4 V
- Heater current
- 0.15 A
Replacement tubes for 1294
The following tubes are recorded as possible replacements for 1294. This direction does not establish that 1294 can replace them.
Rectifier - Half Wave
The database records 1R4 as a possible replacement for1294.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Rectifier - Half Wave |
| Construction | Diode | Rectifier |
| Base | Not recorded | 4AH |
| Socket | Not recorded | Not recorded |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.15 A | 0.15 A |
Where 1294 can be used as the replacement
In these recorded relationships, 1294 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1294.
Rectifier - Half Wave
The database records 1294 as a possible replacement for1R4.
No special restrictions are recorded for this substitution.
| Specification | 1294 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Rectifier - Half Wave |
| Construction | Diode | Rectifier |
| Base | Not recorded | 4AH |
| Socket | Not recorded | Not recorded |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.15 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 1294 specifications →