- Emissions of the sun in radio wavelengths from centimeters to dekameters, under both quiet
and disturbed conditions. Radio Bursts can be "Type I" consisting of many short, narrow-band
bursts in the metric range (300 - 50 MHz).; "Type II" consisting of narrow-band emission that
begins in the meter range (300 MHz) and sweeps slowly (tens of minutes) toward dekameter
wavelengths (10 MHz).; "Type III" consisting of narrow-band bursts that sweep rapidly
(seconds) from decimeter to dekameter wavelengths (500 - 0.5 MHz); and "Type IV" consisting
of a smooth continuum of broad-band bursts primarily in the meter range (300 - 30 MHz).