MW Harmonics ATS-909 vs RCR-22 The harmonic (1476kHz) of RNE1 Barcelona (738KHz) can be tuned in the Sangean ATS-909, but the Sangean RCR-22 (clock radio) can tune in to ORF (1476kHz) without an harmonic... Tags : sangeanats909rcr22mw Visto : 43 video subido por tipex .