artefacts: 361
This data as json
| rowid | artifactNumber | ObjectName | GeneralDescription | model | SerialNumber | Manufacturer | ManuCountry | ManuProvince | ManuCity | BeginDate | EndDate | date_qualifier | patent | NumberOfComponents | ArtifactFinish | ContextCanada | ContextFunction | ContextTechnical | group1 | category1 | subcategory1 | group2 | category2 | subcategory2 | group3 | category3 | subcategory3 | material | Length | Width | Height | Thickness | Weight | Diameter | image | thumbnail | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 361 | 1966.0254.001 | Vacuum tube | METAL/ SYNTHETIC BASE | 6SA7 | Westinghouse | 1948 | circa | PATENTED 1925-1942 | 1 | BLACK PAINT WITH ORANGE PRINTING/ BLACK BASE | PROBABLY USED IN CANADA | USED AS A COMBINATION OSCILLATOR MIXER AND FIRST DETECTOR IN A SUPERHETERODYNE RADIO RECEIVER | FIRST SINGLE-ENDED CONVERTER | Vacuum Tubes | Receiving | Heptode | metal;synthetic | 6.5 | 3.3 | http://source.techno-science.ca/artifacts-artefacts/images/1966.0254.001.aa.cs.png | http://source.techno-science.ca/artifacts-artefacts/images/1966.0254.001.aa.cs.thumb.png |
