THE DEREK COHEN - WB0TUA TELEGRAPH COLLECTION (Samples)
W1TP TELEGRAPH AND SCIENTIFIC INSTRUMENT MUSEUMS: http://w1tp.com
Tom Perera - W1TP

These are a few sample pictures of Derek Cohen's telegraph keys.

Click on photographs then click "GO BACK" to return to text.

THE DEREK COHEN - WB0TUA COLLECTION (Samples)


  • BUNNELL - MARTIN FLASH KEY (Top View): (31KB)

  • BUNNELL - MARTIN FLASH KEY LABEL: (37KB)

  • BUNNELL - MARTIN FLASH KEY (End View): (33KB)

  • BUNNELL - MARTIN FLASH KEY (Damper): (31KB)
    UNKNOWN BUGS: The following two bugs are of unknown manufacture. Any information would be appreciated by Derek Cohen.

  • UNKNOWN BUG # 1 (Top View): (27KB)

  • UNKNOWN BUG # 1 (Damper): (35KB)

  • UNKNOWN BUG # 1 (Dash Contact): (34KB)

  • UNKNOWN BUG # 1 (Mechanism): (42KB)

  • UNKNOWN BUG # 1 (Side View): (39KB)

  • UNKNOWN BUG # 1 (Switch View): (36KB)

  • UNKNOWN BUG # 2 (Top View): (31KB)

  • UNKNOWN BUG # 2 (Damper): (36KB)

  • UNKNOWN BUG # 2 (Paddle View): (35KB)

  • UNKNOWN BUG # 2 (Finger View): (34KB)


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Professor Tom Perera Ph. D. - W1TP
Professor Emeritus:
Montclair State University
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    COPYRIGHT NOTICE: (Copyright (c) 2023: Prof. Tom Perera Ph. D.)
    Although all the pictures and text are copyrighted, you may use any of them for your own personal applications including public lectures and demonstrations, publications and websites as long as you mention the w1tp.com Museum. If you plan to offer them for sale to the public in any form, please email me for permission which I will generally grant as long as you mention my museum: http://w1tp.com or https://EnigmaMuseum.com My email address is given at the bottom of this page. Some of the material may require contacting other copyright owners for commercial use and I will inform you by email. Please also see the Disclaimer of Warranty.