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Filter: Subject of Radio
Filter: Subject of electric apparatus and appliances
| Date: | |
|---|---|
| Description: | Man wearing microphone and headphones seated before a radar screen. |
| Date: | 12 15 1981 |
|---|---|
| Description: | Captain Charles Biele and an unidentified staffer in the Navy facility at Clam Lake known as Project ELF. |
| Date: | 12 15 1981 |
|---|---|
| Description: | Captain Charles Biele and an unidentified staffer inside the Navy's facility at Clam Lake known as Project ELF. |
| Date: | 1963 |
|---|---|
| Description: | Meeting of the anti-Castro group Commandos L with radio transmitter and receiver. Four men are sitting around a kitchen table with a radio transmitter and ... |
| Date: | |
|---|---|
| Description: | A vacuum tube built by Cyril Moreau Jansky for WHA radio station at the University of Wisconsin in Madison. |
| Date: | |
|---|---|
| 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 |
|---|---|
| Description: | The completed internal parts of a vacuum tube (power tube). |
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