(K:1)
(K:2)
MT7H7A4410-EU, MT7H7A4310-EU Headband
SNR=34 dB H=35 dB M=32 dB L=25 dB
Frequency (Hz)
1)
63
125
250
500
1000
2000
4000
8000
Mean attenuation (dB)
2)
21.2
20.2
26.7
35.0
37.4
35.7
40.4
38.9
Std deviation (dB)
3)
4.1
3.1
3.1
2.6
2.1
3.0
2.9
2.1
Assumed Protection Value (dB)
4)
17.1
17.1
23.6
32.4
35.3
32.7
37.5
36.8
5) 491 g
MT7H7P3E4410-EU, MT7H7P3E4310-EU Helmet attachment
SNR=33 dB H=34 dB M=30 dB L=23 dB
Frequency (Hz)
1)
63
125
250
500
1000
2000
4000
8000
Mean attenuation (dB)
2)
18.6
18.8
23.8
31.1
37.2
35.5
38.2
36.5
Std deviation (dB)
3)
4.1
2.5
2.0
2.6
3.1
2.0
2.1
4.2
Assumed Protection Value (dB)
4)
14.5
16.4
21.8
28.6
34.1
33.5
36.1
32.3
5) 464 g
(J)
1
2
3
DCS (Digital Coded Squelch)
39.
023
53.
114
67.
174
81.
315
95.
445
109.
631
40.
025
54.
115
68.
205
82.
331
96.
464
110.
632
41.
026
55.
116
69.
223
83.
343
97.
465
111.
654
42.
031
56.
125
70.
226
84.
346
98.
466
112.
662
43.
032
57.
131
71.
243
85.
351
99.
503
113.
664
44.
043
58.
132
72.
244
86.
364
100.
506
114.
703
45.
047
59.
134
73.
245
87.
365
101.
516
115.
712
46.
051
60.
143
74.
251
88.
371
102.
532
116.
723
47.
054
61.
152
75.
261
89.
411
103.
546
117.
731
48.
065
62.
155
76.
263
90.
412
104.
565
118.
732
49.
071
63.
156
77.
265
91.
413
105.
606
119.
734
50.
072
64.
162
78.
271
92.
423
106.
612
120.
743
51.
073
65.
165
79.
306
93.
431
107.
624
121.
754
52.
074
66.
172
80.
311
94.
432
108.
627
(I)
1
.
67.0
8.
88.5
15.
110.9
22.
141.3
29.
179.9
36.
233.6
2.
71.9
9.
91.5
16.
114.8
23.
146.2
30.
186.2
37.
241.8
3.
74.4
10.
94.8
17.
118.8
24.
151.4
31.
192.8
38.
250.3
4.
77.0
11.
97.4
18.
123.0
25.
156.7
32.
203.5
5.
79.7
12.
100.0
19.
127.3
26.
162.2
33.
210.7
6.
82.5
13.
103.5
20.
131.8
27.
167.9
34.
218.1
7.
85.4
14.
107.2
21.
136.5
28.
173.8
35.
225.7
(H) CTCSS (Continuous Tone Coded Squelch System)
