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Summary
| Description |
English: In 1934 the first testcard "Tuning Signals" was broadcast by BBC1, the earliest being a simple line and circle broadcast using Baird's 30 line system, and used to synchronise the mechanical scanning system. |
| Source | Own work |
| Author | Alex:D |
Licensing
|
This image of simple geometry is ineligible for copyright and therefore in the public ___domain, because it consists entirely of information that is common property and contains no original authorship. |  |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:17, 5 July 2008 | | 800 × 600 (1 KB) | Alex:D | {{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }} |
| 16:15, 5 July 2008 |  | 800 × 600 (1,002 bytes) | Alex:D | {{Information |Description={{en|1=In 1934 the first testcard "Tuning Signals" was broadcast by BBC 1, the earliest being a simple line and circle broadcast using Baird's 30 line system, and used to synchronise the mechanical scanning system.}} |Source=Own |
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