I regularly receive mysterious NDB beacons inside the AM broadcast bands. Here are some recordings made with Sony ICF-2001D receiver. Note that on some of them there's strong interference appearing from local broadcast stations because the receiver does not have narrow CW filters. I made the listening in either USB or LSB mode.
22.08.2013 LL beacon 0735 on 659 USB
22.08.2013 D beacon 0556 on 610 USB
22.08.2013 BSE beacon 0718 on 256 LSB (moderate adjacent QRM from BNR1-Horizont on 261 kHz AM
22.08.2013 OPW beacon 0725 on 267.5 USB (strong adjacent QRM from BNR1-Horizont on 261 kHz AM
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