Combined radio dynamic spectrum of NDA (10−80 MHz) and CALLISTO (80−400 MHz). Dashed white lines outline the F and H lanes of the observed type II bursts. The first two F and H emission lanes (with frequency decreasing with time) are connected to the shock ahead of the CME eruption, while the last two lanes (with frequency increasing with time) represent the BBs of the type II-like emission attributed to the reflected shock.