Telegraph key '' KPA-4 ''.
Service devices.The KPA-4 telegraph key has been produced since 1990. Telegraph key "KPA-4" type B 3029 is designed to generate Morse code elements ("point", "dash", "pause") and their accumulation in memory for subsequent repeated playback. The telegraph key can be used in work at radio amateur stations, during training and competitions of radio sportsmen. More details below.
