The comb-pulse response of a system of half-integer quadruplar nuclei depends on the quadrupolar coupling constant ωq. When the average rf field strength ωe (in rad. s-1) satisfies the condition ωq/ωee/(2π); and when ωq/ωe > 2.0, the resul tant line appears at 2ωe/(2π). Theoretical calculations are in agreement with experiments.These consequences indicate that the comb-pulse sequence will probably become a powerful technique for investigating phase transitions and dynamic processes in these systems.