The QN Signals are Morse code operating signals that were introduced for Amateur radio net operation in 1939 on the Michigan QMN Net to lighten the burdens of net control operators.
Originally created by a committee of the Detroit Amateur Radio Association led by Ralph Thetreat, W8FX.
[1] Ev Battey W1UE (W4IA-SK), then ARRL assistant communications manager, later printed them in QST.
[4]: 5–3 Although these codes are within the Aeronautical Code signals range (QAA–QNZ) and thus conflict with official international Q signals beginning with QN, the ARRL informally queried FCC's legal branch about the conflict.
The opinion then of the FCC was that "no difficulty was forseen [sic?]