  We present our first results for a sample of southern high-amplitude delta
Scuti stars (HADS), based on a spectrophotometric survey started in 2003. For
CY Aqr and AD CMi, we found very stable light and radial velocity curves; we
confirmed the double-mode nature of ZZ Mic, BQ Ind and RY Lep. Finally, we
detected gamma-velocity changes in RS Gru and RY Lep
