  We present data on the monitoring of the Galactic X-ray transient GRS
1915+105 at 15 GHz with the Ryle Telescope. We have found quasi-periodic
oscillations with periods in the range 20-40 min which are tentatively
associated with the soft-X-ray variations on the same time-scale. The overall
behaviour of the radio emission is shown to vary in a strong association with
the X-ray emission as recorded by the RXTE all-sky monitor.
