USED J38 Morse Key

Condition:

Nice clean example

HAS BEEN MOUNTED ON AN ALUMINIUM PLATE

Whats included:

During the years between WW I and the Korean War the US Army Signal Corps designated many of their telegraph (or Morse code) keys with a "J" prefix followed by a number. The known numbers range from J-1 to J-51. All of these keys are considered collectible, and many of the WW II models are still in everyday use by Amateur Radio (Ham) Operators. One of the most popular of the "J" keys is the J-38.

The J-38 was designed to be used with a Signal Corps radio/telegraph operator training set. The strange looking binding posts and shorting strap at the back of the key were used to connect a set of headphones to one side of the key ("tel") and the other side of the key ("line") to the training set. The effect was to put the key and headphones in series. Click here to see a description of the set up and key circuit and here to see a photo of an army student using the key and phones ---> (from War Department Technical Manual TM 11-432, February 2, 1942).