230-233HF Doppler observations were made at Waltair on 10 MHz ATA standard time and frequency CW signal from New Delhi during the total solar eclipse of 16 Feb. 1980 across South India. The Doppler record showed characteristic frequency variations particularly observable on an eclipse day, which throw some light on reflection height changes in the ionosphere during an eclipse. The record also exhibits a quasi-periodic structure of 6-min period which would not be present normally for this time of the day. This feature could be an eclipse generated phenomenon
