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Page 1 of 801 records found with the key word(s) Radio communication. Displaying 25 50 100 200 at a time.

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Records with Images

(Followed by: text only records)

1. Condenser Microphone, by Edison Bell, London?, c. 1930

2. Glass Fragment from Air Raid Damage, London, 1917

3. Seal Stamp for GEC, Mid-20th Century

4. Macbeth-Jung Cipher Machine, by A. James Jung, London, c. 1916

5. Nameplate for English Electric, British, Mid-20th Century

6. Generator Propellor, Early 20th Century

7. 12 Volt Fleming Valve, by Ediswan, London, c. 1905

8. 4 Volt Fleming Valve, by Royal Ediswan, London, c. 1905

9. 4 Volt Experimental Fleming Oscillation Valve, by Ediswan,...

10. 12 Volt Fleming Valve, by Ediswan, London, c. 1905

11. Experimental Fleming Valve, by J.A. Fleming, English, c. 1889

12. Fleming Valve, by Ediswan, London, c. 1905

13. 4 Volt Fleming Valve, by Royal Ediswan, London, c. 1905

14. Fleming Valve, by Ediswan, London, c. 1905

15. Fleming Valve, by Ediswan, London, c. 1905

16. Fleming Valve, by J.A. Fleming, English, c. 1889

17. 4 Volt Fleming Oscillation Valve, by Royal Ediswan, London,...

18. 12 Volt Fleming Valve, by Royal Ediswan, London, c. 1905

19. Headphones from Magnetic Detector, by Marconi Company, London,...

20. Marconiphone Two-Valve Receiver Type V2A and accompanying Headphones,...

21. Photograph (Reproduction) of Dame Nellie Melba at an Early...

22. Linesman's Detector Galvanometer, by Marconi

Text Only Records

(Preceded by: records with image previews)

23. Marconi Receiver Accessories

24. Part of Sykes Microphone, by Sykes, English, 1923

25. Radio (no. 13706, model FR 10) by Kolster - Brandes Limited,...

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