MT73H7F4D10NA-50 ANSI S3.19-1974
B:1 Test Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR CSA
B:2 Mean attenuation (dB) 21.2 23.7 34.3 36.6 37.4 39.6 38.9 37.9 39.2 Class
B:3 Standard deviation (dB) 3.3 2.7 2.4 2.8 2.8 3.6 2.9 2.1 3.3 AL
MT73H7B4D10NA, MT73H7B4D10NA-50 ANSI S3.19-1974
B:1 Test Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR CSA
B:2 Mean attenuation (dB) 20.9 23.6 33.8 37.3 36.8 39.4 39.0 37.7 38.9 Class
B:3 Standard deviation (dB) 3.1 2.0 2.2 2.4 2.7 3.1 2.4 1.8 2.9 AL
MT73H7P3E4D10NA, MT73H7P3E4D10NA-50 ANSI S3.19-1974
B:1 Test Frequency (Hz) 125 250 500 1000 2000 3150 4000 6300 8000 NRR CSA
B:2 Mean attenuation (dB) 19.0 21.9 30.4 35.9 36.1 37.3 37.2 34.7 34.8 Class
B:3 Standard deviation (dB) 2.1 2.4 3.1 3.5 3.0 3.5 3.3 3.2 3.3 A
B:4 Tested with 3M™ PELTOR™ Helmet Model H-700.
(C) COMPATIBLE INDUSTRIAL SAFETY HELMETS EN 352-3
C:1 Helmet Manufacturer C:2 Helmet model C:3 Attachment C:4 Head Size
3M SecureFit Safety Helmet X5000 E SML
3M SecureFit Safety Helmet X5500 E SML
3M G3000 Basic set E L
3M G2000 K L
3M G3501 E L
3M AF L
3M H-700 E L
Grolls Balance AC E L
Petzl Vertex E L
Protector / Scott Style 600 E SML
Protector / Scott Tuffmaster II E L
(D) EXTERNAL AUDIO INPUT LEVELS EN 352-6
D:1 RMS
Voltage U (mV)
D:2 Mean Sound
Pressure (dB(A))
D:3 STD Sound
Pressure (dB)
28,1 70,8 0,7
49,9 75,8 0,7
88,8 80,8 0,7
157,9 85,7 0,7
D:4 94 mV = 82 dB(A)
(E) FACTORY PROGRAMMED RADIO FREQUENCIES (*NA Models)
Channel Frequency
(MHz)
Type Modulation Channel Frequency
(MHz)
Type Modulation Channel Frequency
(MHz)
Type Modulation
1 462.5625 FRS Analog 5 462.6625 FRS Analog 9 467.5875 FRS Analog
2 462.5875 FRS Analog 6 462.6875 FRS Analog 10 467.6125 FRS Analog
3 462.6125 FRS Analog 7 467.7125 FRS Analog 11 467.6375 FRS Analog
4 462.6375 FRS Analog 8 467.5625 FRS Analog 12 467.6625 FRS Analog
27
28
25
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