  We demonstrate coherent storage and retrieval of pulsed light using the
atomic frequency comb quantum memory protocol in a room temperature alkali
vapour. We utilise velocity-selective optical pumping to prepare multiple
velocity classes in the $F=4$ hyperfine ground state of caesium. The frequency
spacing of the classes is chosen to coincide with the $F'=4 - F'=5$ hyperfine
splitting of the $6^2$P$_{3/2}$ excited state resulting in a broadband periodic
absorbing structure consisting of two usually Doppler-broadened optical
transitions. Weak coherent states of duration $2\,\mathrm{ns}$ are mapped into
this atomic frequency comb with pre-programmed recall times of $8\,\mathrm{ns}$
and $12\,\mathrm{ns}$, with multi-temporal mode storage and recall
demonstrated. Utilising two transitions in the comb leads to an additional
interference effect upon rephasing that enhances the recall efficiency.
