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LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 45 of 55 The authors reserve the right to change specifications without notice. EIRP refers to the Equivalent Isotropically Radiated Power, which is the radiated output 1176 power referenced to an isotropic antenna radiating power equally in all directions and whose 1177 gain is expressed in dBi. 1178 1179 By default MaxEIRP is considered to be +14dBm. If the end-device cannot achieve 14dBm 1180 EIRP, the MaxEIRP should be communicated to the network server using an out-of-band 1181 channel during the end-device commissioning process. 1182 When the device transmits in a channel whose frequency is <922MHz, the transmit power 1183 SHALL be limited to +10dBm EIRP even if the current transmit power level set by the 1184 network server is higher. 1185 2.8.4 KR920-923 JoinAccept CFList 1186 The KR920-923 ISM band LoRaWAN implements an optional channel frequency list 1187 (CFlist) of 16 octets in the JoinAccept message. 1188 In this case the CFList is a list of five channel frequencies for the channels four to eight 1189 whereby each frequency is encoded as a 24 bits unsigned integer (three octets). All these 1190 channels are usable for DR0 to DR5 125kHz LoRa modulation. The list of frequencies is 1191 followed by a single RFU octet for a total of 16 octets. 1192 1193 Size (bytes) 3 3 3 3 3 1 CFList Freq Ch4 Freq Ch5 Freq Ch6 Freq Ch7 Freq Ch8 RFU The actual channel frequency in Hz is 100 x frequency whereby values representing 1194 frequencies below 100 MHz are reserved for future use. This allows setting the frequency of 1195 a channel anywhere between 100 MHz to 1.67 GHz in 100 Hz steps. Unused channels have 1196 a frequency value of 0. The CFList is optional and its presence can be detected by the 1197 length of the join-accept message. If present, the CFList replaces all the previous channels 1198 stored in the end-device apart from the three default channels. The newly defined channels 1199 are immediately enabled and usable by the end-device for communication. 1200 2.8.5 KR920-923 LinkAdrReq command 1201 The KR920-923 LoRaWAN only supports a maximum of 16 channels. When ChMaskCntl 1202 field is 0 the ChMask field individually enables/disables each of the 16 channels. 1203 1204 ChMaskCntl ChMask applies to 0 Channels 1 to 16 1 RFU .. .. 4 RFU 5 RFU 6 All channels ON The device should enable all currently defined channels independently of the ChMask field value. 7 RFU Table 61: ChMaskCntl value table 1205 1206 If the ChMaskCntl field value is one of values meaning RFU, the end-device should reject 1207 the command and unset the "Channel mask ACK" bit in its response. 1208

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