  The coupled evolution of the spin frequency, core temperature, and r-mode
amplitude of an accreting neutron star is calculated. We focus on those
conditions that can produce persistent gravitational radiation from the r-mode.
During X-ray quiescent phases of transient LMXBs, one may be able to identify
the constant contribution of the gravitational wave emission to the spindown
rate. Another signature is the r-mode contribution to the heating.
