Overview
Lindal was a brand name used on vacuum electron tubes sold primarily during the 1950s through 1970s. Lindal-branded tubes were commonly found in consumer radios, televisions, amateur radio equipment, audio amplifiers, and communications electronics.
Most Lindal tubes appear to have been rebranded OEM-manufactured tubes sourced from larger American and Japanese tube manufacturers rather than produced by Lindal itself. Tubes carrying the Lindal name have been identified with manufacturing characteristics associated with companies such as GE, Sylvania, RCA, and Japanese contract manufacturers.
Lindal electron tubes were marketed in the replacement tube market during the later years of the vacuum tube era and were commonly sold through electronics parts distributors, radio supply stores, and service shops.
Technical Specifications
| Specification | Details |
|---|---|
| Industry | Vacuum Tubes / Electronics |
| Product Types | Receiving tubes, television tubes, audio tubes |
| Active Period | Primarily 1950s–1970s |
| Markets | Consumer electronics, communications, audio |
| Manufacturing | Primarily rebranded OEM production |
Description
Lindal-branded tubes included miniature receiving tubes, compactrons, rectifiers, audio output tubes, and television sweep tubes. Examples documented under the Lindal name include tube types such as:
- 6JB6
- 6KD6
- 12AZ7
- 6LR8
Packaging and tube construction varied considerably, suggesting multiple OEM manufacturing sources over time.
History
| Year | Event |
|---|---|
| 1950s | Lindal-branded vacuum tubes appeared in replacement parts markets |
| 1960s | Expanded availability of television and audio tube types |
| 1970s | Continued sales during decline of consumer vacuum tube industry |
References
- https://www.one-electron.com/Archives/Tube/Hytron/Hytron.html
Historical archive of vacuum tube manufacturing and branding information. - https://www.vivatubes.com/lindal/
Archive and sales listings documenting Lindal-branded vacuum tubes. - https://www.nosvacuumtubes.net/brand/lindal/
Documentation and listings for Lindal vacuum tube types. - https://www.radiodaze.com/matched-pair-of-lindal-6kd6-vacuum-tubes-item-rdw-233/
Product documentation for Lindal-branded 6KD6 vacuum tubes.