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Sxt 5Hnd PtP MPLS Sxt 5Hnd PtP MPLS

Sxt 5Hnd PtP MPLS bridge 

The new Nv2 (TDMA) Sxt 5HnD CPE by Mikrotik can suprise with the speed, configurability and scalability. Even though it has only Level3 of Mikrotik License it is enough to make PtP bridge. This is an example shows how the bridge be done using MPLS instead of WDS. 


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5Ghz Channel Spectral Width in Australia

Channel Spectral width and Power Limitations in Australia

Channel

Frequency (MHz)

Class Licence 2000 (amended) Item

Permitted
EIRP (mW
)

Channel Spectral Width (MHz)
5 10 20 40
1

to

13

2400

to

2483.5

45A 4000
34 5170 44 50 100 200

36

5180

38 5190

40

5200

42

5210

44

5220

48

5240

50

5250

44A

50 100 100
with DFS Disabled in Advanced Wireless Settings

or

200
with DFS Enabled in Advanced Wireless Settings

52

5260

56

5280

58

5290

60

5300

64

5320

100 5500 46 250 500 500
with DFS Disabled

or

1000
with DFS Enabled

104 5520
108 5540
112 5560
116 5580
120 5600 Not Permitted
124 5620
128 5640
132 5660 46

250

500 500
with DFS Disabled

or

1000
with DFS Enabled
136 5680
140 5700

149

5745

45B 4000

152

5760

153

5765

157

5785

149

5745

152

5760

153

5765

157

5785

160

5800

161

5805

165

5825


Dynamic Frequency Selection (DFS) and Transmitter Power Control (TPC)

Some 5 GHz wireless channels co-exist with some Radar frequencies. Rather than ban WiFi for these frequencies, the ACMA has followed the same principle used in USA and the EU and allowed WiFi to operate on these same frequencies under the limitation that the WiFi gear must have:

  • DFS: a mechanism to automatically detect Radar, and move off to a different channel,  and
  • TPC: a mechanism where the TX power can be reduced at least 6 dB below the maximum permitted.
Both Ubiquiti and Mikrotik devices (CPE boards) and radio cards have the ability to control the above settings which make them safe to use in Australia. If you have difficulties with finding free channel, you might consider to reduce channel with from standard 20Mhz to 10Mhz or even 5Mhz. On the other hand, if you need to use turbo more and you have free channels to use, you might be able to increasy chnnel width to 40Mhz.

Note: Please use the above table as a guide only. For more information about legal limits in Australia please use official government website
here
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