(I) CTCSS (Continuous Tone Coded Squelch System)
1.
8.
67.0
2.
71.9
9.
3.
10.
74.4
4.
77.0
11.
5.
12.
79.7
6.
82.5
13.
7.
14.
85.4
(J)
1
(K) Attenuation
Frequency [Hz]
MT7H7A4600-NA
Mean Attenuation [dB]
Head band
Standard Deviation [dB]
MT7H7B4600-NA
Mean Attenuation [dB]
Neck band
Standard Deviation [dB]
MT7H7P3E4600-NA
Mean Attenuation [dB]
Helmet attachment
Standard Deviation [dB]
ANSI S3.19-1974
(L) Weight
MT53H7A4600-NA
M753H7B4600-NA
MT53H7P3E4600-NA
(M) Helmet attachments
Z3E
15.
88.5
110.9
91.5
16.
114.8
17.
94.8
118.8
97.4
18.
123.0
19.
100.0
127.3
103.5
20.
131.8
21.
107.2
136.5
2
3
125
17.8
4.4
18.9
5.2
19.4
3.4
13.9 oz. (394 g)
13.5 oz. (384 g)
14.7 oz. (418 g)
Z3G
22.
29.
141.3
23.
146.2
30.
24.
31.
151.4
25.
156.7
32.
26.
33.
162.2
27.
167.9
34.
28.
35.
173.8
250
500
1000
2000
23.0
32.1
36.2
35.1
3.2
2.8
3.0
2.4
25.9
35.2
37.0
34.9
3.2
3.3
2.9
2.5
24.3
33.6
35.5
34.1
3.3
3.8
1.7
2.6
Z3K
36.
179.9
233.6
186.2
37.
241.8
38.
192.8
250.3
203.5
210.7
218.1
225.7
3150
4000
6300
8000
39.0
38.7
38.3
36.5
3.8
3.0
3.5
3.9
40.6
39.9
39.7
39.7
3.6
3.0
2.3
2.5
38.5
38.0
35.8
35.7
3.6
3.1
5.4
5.4
NRR
CSA
Class
25
A
26
A
25
A