  A high-accuracy multisite campaign was carried out from 2002 January to May
with a photometric coverage of 398 hours at five observatories. The
concentration on a few selected sites gives better consistency and accuracy
than collecting smaller amounts from a larger number of sites. 23 frequencies
were detected with a high statistical significance. 6 of these are new. The 17
frequencies found in common with the 1992-1995 data are the modes with highest
amplitudes. This indicates that the pulsation spectrum of FG Vir is relatively
stable over the ten-year period. Two frequencies have variable amplitudes and
phases from year to year as well as during 2002. These were both found to be
double modes with close frequencies. For the mode at 12.15 c/d this leads to an
apparent modulation with a time scale of about 129d. The close frequencies at
12.15 c/d are composed of a radial and a nonradial mode, suggesting a
similarity with the Blazhko Effect seen in RR Lyrae stars.
