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Description: | The original transmitting equipment for WHA, the oldest radio station in the nation. The telephone pictured served as a microphone. The station was in the ... |
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Description: | A vacuum tube built by Cyril Moreau Jansky for WHA radio station at the University of Wisconsin in Madison. |
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Description: | A radio transmitter tuner and vacuum tube. The tube was built by Cyril Moreau Jansky and the transmitter was most likely built by him as well. |
Date: | 1917 |
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Description: | The completed internal parts of a vacuum tube (power tube). |
Date: | |
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Description: | A blueprint schematic of a radio telephone circuit for the University of Wisconsin in Madison. |
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