A 0.5kg antenna was designed to 30 g's per the mass acceleration curve. To qualify the design prior to integration on the spacecraft the antennas were proto-flight vibration tested in both the sine and random vibration environments. During the initial sine signature test in the Z-axis, the resonance at response accelerometer R1 on the tip of the antenna occurs at 64.26 Hz. At resonance, the peak response to the control input at R1 is 15.51g. What is the Q value at resonance for this antenna