MIL-PRF-26542/2E
Frequency
*
points
200 Hz
700 Hz
1,000 Hz
1,500 Hz
2,500 Hz
4,000 Hz
4,850 Hz
6,000 Hz
Upper
+2.3
-6.5
+5.6
+8.0
+8.0
3.5
-2.5
-9.0
limits (dB)
1/
1/
1/
Lower
-16.0
-7.0
-4.0
-4.0
-4.0
-13.6
-20.0
---
limits (dB)
1/
1/ dB limits between key break point are calculated, using slope method.
FIGURE 3. Frequency response at 25,000 feet.
3