German Spark Keys


(Click on the pictures below to see larger versions of the photo)


Early wood based German spark key by Deutch Telefonwerk & Kabelindustrie.




Telefunken postal style spark key with large contacts.




Slaby-Arco aircraft spark key. The tall knob makes it easier for the pilot to operate.




Telefunken T.S. 197 step lever spark key. Uses a ball bearing seated in a socket in the contact to increase surface area of the contact. (Gil Schlehman K9WDY Collection)





Telefunken HT-3 spark key. The key in the middle, with larger contacts, is in the AWA Museum in E. Bloomfield, NY.