  Solar radio bursts (SRBs) are the signatures of various phenomena that happen
in the solar corona and interplanetary medium (IPM). In this article, we have
studied the occurrence of Type III bursts and their association with the
Sunspot number. This study confirms that the occurrence of Type III bursts
correlates well with the Sunspot number. Further, using the data obtained using
the e-CALLISTO network, we have investigated the drift rates of isolated Type
III bursts and the duration of the group of Type III bursts. Since Type II,
Type III, and Type IV bursts are signatures of solar flares and/or CMEs, we can
use the radio observations to predict space weather hazards. In this article,
we have discussed two events that have caused near-Earth radio blackouts. Since
e-CALLISTO comprises more than 152 stations at different longitudes, we can use
it to monitor the radio emissions from the solar corona 24 hours a day. Such
observations play a crucial role in monitoring and predicting space weather
hazards within a few minutes to hours of time.
