E.F.Johnson 114-515 "Speed-X-key"
SPECIFICATIONS
| Type: | Vibrating keyer |
| Speed: | ? |
| Dimensions (W*H*D): | ? mm (?") |
| Weight: | ? g (? oz) |
| Manufactured: | USA, 195x-19xx (Discontinued) |
| Other: |
New price 1951 in the US: $7.50.
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| Related documents: | |
| Modifications and fixes: | |
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