Tube cross-reference
EL509 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EL509 power - tv horizontal output (sweep). Compare core specifications and verify every restriction before using a replacement.
Exact variations of EL509
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.
Replacement tubes for EL509
The following tubes are recorded as possible replacements for EL509. This direction does not establish that EL509 can replace them.
Power - TV Horizontal Output (sweep)
The database records 6KG6A as a possible replacement forEL509.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - TV Horizontal Output (sweep) | Power - TV Horizontal Output (sweep) |
| Construction | Pentode | BeamPower |
| Base | 9C18 | 38A |
| Socket | B9D | Not recorded |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 2.5 A | 2 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 EL509 specifications →