File:1920s TRF radio manufactured by Signal.jpg
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Summary
| Description |
English: 1920s TRF radio manufactured by Signal Electric MFG. CO. located in Menominee Mich. Demonstrates early radio construction methods using "breadboard" |
| Source | Own work |
| Author | Armstrong1113149 |
Licensing
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
| Annotations | This image is annotated: View the annotations at Commons |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:40, 15 March 2009 | | 3,088 × 2,128 (3.16 MB) | Armstrong1113149 | {{Information |Description={{en|1=1920s TRF radio manufactured by Signal Electric MFG. CO. located in Menominee Mich. Demonstrates early radio construction methods using "breadboard" }} |Source=Own work by uploader |Author=[[User:Armstrong1113149|Armstro |
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