Double current morse key
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LicenseDouble current morse key, GPO No. 3535, with send/receive switch
Science Museum Group
© The Board of Trustees of the Science Museum
Double current morse key, GPO No. 3535, with send/receive switch
Details
- Category:
- Telecommunications
- Object Number:
- 1971-174
- type:
- switch
- credit:
- Ministry of Defence
