Recent observations of electron holes (e-holes) in space plasma have led to theoretical and numerical studies which show that e-holes in a magnetized plasma are unstable nonlinear structures. Their decay generates plasma waves in the frequency bands of l_ower h_ybrid (LH) and e_lectrostatic w_histler (EW) waves. An analysis is presented demonstrating that the e-holes are an effective radiator of plasma waves in the above frequency bands critically depending on their scalelength (⊥) transverse to the ambient magnetic field. In this sense, an e-hole acts like a radiating antenna. The results from 3-D numerical simulations are presented to examine the nonlinear consequences of the radiation from e-holes. When e-holes have long ⊥ during the initial stage of their existence, they undergo a beading process. This involves radiation of spatial Fourier components corresponding to long scalelength in the structure of e-holes, leaving behind smaller structures. This divides the initially large e-hole structure into several fragments. The resulting smaller structures with ⊥~∥ eventually dissipate by radiating transversely structured lower hybrid waves. ¿ 2001 American Geophysical Union