Wirnet iBTS
Document title : Installation and
Maintenance Manual
Version : 2.0
Author : SNI
Date : 04/12/2018
Classification
This document is the strict property of Kerlink and shall not be either copied nor sent without express
written authorization of Kerlink
Internal Use
Kerlink m2m technologies reserved rights
Confidential
Kerlink – 1 rue Jacqueline Auriol – 35235 THORIGNÉ-FOUILLARD
Page 63 / 221
Strict confidential
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A band pass filter offers higher attenuation of the out of band blockers.
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The signal is then transmitted to a second LNA used to compensate the insertion
losses of the next 4 ways power splitter to not degrade the receiver noise figure.
The details of the frequency bands, channelization, out of band rejection are detailed in
§1.5.4.6.
1.5.4.5
Modulations and data rates
The LoRa LOC module supports the following modulation schemes:
SF
BW (KHz)
Data rate (kbps)
7
500
21875
8
500
12500
9
500
7031
10
500
3906
11
500
2148
12
500
1172
7
250
10938
8
250
6250
9
250
3516
10
250
1953
11
250
1074
12
250
586
7
125
5469
8
125
3125
9
125
1758
10
125
977
11
125
537
12
125
293
Note :
Payload may have to be adjusted to not overrule 400ms frame length, depending on
the local regulations. In this case, SF11/125KHz and SF12/125KHz are not used.
1.5.4.6
Frequency bands and channelization
The frequency bands covered by the Wirnet iBTS depends on the version of the front-end
module used (868, 915 or 923).
The downstream frequencies and upstream frequencies are listed in the following table:
Version
Link
Frequency range start/end
868
Upstream (RX Wirnet iBTS)
863MHz / 873MHz
868
Downstream (TX Wirnet iBTS)
863MHz / 873MHz
