QST, Dec 1954, p. 139.
CQ, Jan 1962, p. 9.
Gonset’s Monitone was not only a code practice oscillator, but could be used to monitor on-the-air phone and CW signals as well. Unlike some competing code oscillators, the 3022 did not have high voltage across the key contacts.
References
Brief description. Popular Electronics, Oct 1954, p. 68.
