Top: radio dynamic spectrum from the Learmonth observatory, Australia in the 25−180 MHz frequency range plotted against the GOES soft X-ray flux in 1−8 Å. The radio spectrum shows narrow type III and type II radio bursts during the M-class flare. “F” and “H” indicate the fundamental and second-harmonic band emission, respectively. Bottom: emission heights of type II radio burst (from fundamental band) in the corona estimated from the Newkirk one-fold and two-fold coronal density models. The distance-time profile of the coronal wave is also included.