Because spectroscopic experiments often use compact arrays and narrow bandwidths, they are more vulnerable than continuum observations to the effects of the Sun passing through the sidelobes of the array. Both short baseline lengths and narrow channel bandwidths reduce the spectroscopists' immunity from far-out sidelobe responses--this is one way in which continuum observers are helped by bandwidth smearing! The problems are especially severe at low observing frequencies at times of enhanced solar activity. Below 2 GHz, many spectroscopic experiments can be done only at night if the Sun is active.