2019-12-19
5
/
20
2.2
Supported channels and frequencies
23WT25 and NSK5 support mainly the same center frequencies and deviations. The NSK5 also
supports center frequencies above the ITU-T telecontrol and data band which reaches up to
3240
Hz. Only 600 baud and 2400 baud are not compatible to each other. A compatible 1200
baud plus speech option is not available on the 23WT25.
Baud rate
50
100
200
200/
300
1200
De
vi
at
ion
NSK5
± 30 Hz
± 60 Hz
± 90 Hz
± 120 Hz
± 400 Hz
23WT25
± 30 Hz
± 60 Hz
± 90 Hz
1
± 120 Hz
± 400 Hz
C
en
ter fr
eq
uen
ci
es
[H
z]
23W
T2
5 + N
SK
5
420
480
540
600
540
1700
660
720
780
900
900
960
1080
1020
1140
1200
1260
1260
1380
1440
1560
1500
1620
1620
1680
1740
1860
1920
1980
2040
1980
2100
2160
2220
2340
2340
2400
2520
2460
2580
2640
2700
2700
2820
2880
3000
2940
3060
3060
3120
3180
N
SK
5
3300
3360
3420
3480
3420
3540
3600
3660
3780
3780
3840
3900
Table 1: Supported center frequencies and deviations per baud rate for 23WT25 and NSK5
1
Included in narrowband firmware release