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