This is a list of all Telegraph Keys artifacts

Telegraph keys were first used on telegraph lines to send Morse Code. Today ham radio can transmit by morse code (CW) or voice or several digital formats. To be good at morse code, practice is essential. It is important to have proper spacing between the di’s, dah’s and between letters and words. A code practice oscillator allows practice when time allows. They were especially designed to lend a helping hand to aspiring amateurs, scouts, students, hobbyists, and shortwave listeners. Practice code on the oscillator either by listening to the audible tone or by watching the code flasher. Most have plenty of volume for group practice with a loudspeaker. Or a phone jack allows the use of any high impedance type set of headphones. The museum has several in working order. See how your skills compare.