SIGNAL-T ST 167 BETTA, Technical Description And Operating Manual

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Technical description and operating manual ST 167 and ST167WB
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Turn on permission for event log record (see 6.6)
Set up time: “MENU” – “System” – “Time” – “Set clock”.
Brief technical information
WIFI connection, considered to the tasks, solvable by ST167, have these characteristics:
 Router/access point emits always, RD only at data transfer moment.
 During data transfer from RD to PC with router using, there are will be signals on one channel (frequency
range) from 2 sources – RD itself and router.
 Channel number can be set up manually or change automatically depending on network congestion.
 Used frequency ranges (2.4 and 5GHz) are unlicensed (ISCM). Protection level from other signals
influence is high enough, that gives an opportunity of sharing of this frequency range with other data
transfer standards (BLUETOOTH for example). This fact can be used for hiding of data transfer channel
by third-party devices.
 Shared WIFI networks analysis software can’t guarantee 100% detection of WIFI connections due to the
wide hiding opportunities on software level.
 WIFI 2.4GHz range
Total amount of channels in this range – 14. In Russia 13 and 14 channels are not in use. In USA 11-14
channels are not in use, what makes impossible to use, for example, Iphone with this channels.
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
1 2.412 4 2.427 7 2.442 10 2.457 13 2.472
2 2.417 5 2.432 8 2.447 11 2.462 14 2.484
3 2.422 6 2.437 9 2.452 12 2.467
As it can be seen from the picture, 1,6 and 11 channels are not
intersecting.

WIFI 5GHz Range
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
Channel Central
frequency,
GHz
34 5.17 52 5.26 108 5.54 147 5.735 163 5.815
36 5.18 54 5.27 112 5.56 149 5.745 165 5.825
38 5.19 56 5.28 116 5.58 152 5.755 167 5.835
40 5.2 58 5.29 120 5.6 153 5.765 171 5.855
42 5.21 60 5.3 124 5.62 155 5.775 173 5.865
44 5.22 62 5.31 128 5.64 157 5.785 177 5.885
46 5.23 64 5.32 132 5.66 159 5.795 180 5.905
48 5.24 100 5.5 136 5.68 160 5.8
50 5.25 104 5.52 140 5.7 161 5.805
Fig.35