Parabolic Microphone Performance Comparison At 150 Feet

125-Hz-@-150-ft
250-Hz-@-150-ft
500-Hz-@-150-ft
1-kHz-@-150-ft
2-kHz-@-150-ft
4-kHz-@-150-ft
8-kHz-@-150-ft
16-kHz-@-150-ft