In this work, we present the analytic treatment of the Fourier transform (FT) of the gravitational wave (GW) signal from a pulsar in a parametrized model discussed by Brady et al (1998 Phys. Rev. D 57 2101). The formalism lends itself to a development of the FT that accounts for the corrections due to the orbital eccentricity, and the Jovian and lunar perturbations in terms of well-known special functions.