  We quantify the angular distribution of radio sources in the NVSS by
measuring the two-point angular correlation function. By careful consideration
of the resolution of radio galaxies into multiple components, we are able to
determine both the galaxy angular clustering and the size distribution of giant
radio galaxies. The slope of the correlation function for radio galaxies agrees
with that for other classes of galaxy, gamma = 1.8, with a 3D correlation
length r_0 = 6 h^-1 Mpc (under certain assumptions). Calibration problems in
the survey prevent clustering analysis below 10 mJy. About 7 per cent of radio
galaxies are resolved by NVSS into multiple components, with a power-law size
distribution. Our work calls into question previous analyses and
interpretations of the angular correlation function from radio surveys.
