If the pilot had configured his audio selector switches properly, he would have been able to hear the aural Morse code identifier of "A", for the north side of that low frequency range, and then as he neared the course line itself, he would begin to hear the "N" identifier.
Se o piloto tivese configurado the pilot had configured os interruptores do selector de son correctamente, sería capaz de escoitar o o identificador de código Morse auditivo de "A", para o lado norte do rango de baixa frecuencia, e despois cando se achegou á liña do curso, comezaría a escoitar o indicador "N".