2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/15153I compare the properties of radio emission from neutron star and black hole X-ray binaries. In both transient and persistent systems the ratio of X-ray : radio fluxes is comparable for (low field) neutron stars and black holes. It appears that, broadly speaking, the disc : jet coupling is independent of the nature of the accretor, (except for X-ray pulsars where the strong magnetic field prevents formation of an inner accretion disc and jet).To be published in Proc. NATO advanced study institute `The Neutron Star - Black Hole connection'Astrophysicstext