  Radio emission from cosmic ray air showers has the potential to become an
additional, cost-effective observing technique for cosmic ray research, being
largely complementary to the well-established particle detector and air
fluorescence techniques. We present Monte Carlo simulatios of radio emission
from extensive air showers in the scheme of coherent geosynchrotron radiation
from electron-positron pairs gyrating in the earth's magnetic field.
Preliminary results of our simulations are the predicted frequency, primary
particle energy, shower zenith angle, shower azimuth angle and polarization
dependence of the radio emission. These properties can be directly related to
data measured by LOPES and other experiments.
