Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 46 of 116 The authors reserve the right to change specifications without notice. 3.5.7 US902-928 Receive Windows 893 • The RX1 receive channel is a function of the upstream channel used to initiate the data 894 exchange. The RX1 receive channel can be determined as follows: 895 o RX1 Channel Number = Transmit Channel Number modulo NbChannel, 896 where NbChannel is the number of active receive channels. 897 • The RX1 window data rate depends on the transmit data rate (see Table 26 below). 898 • The RX2 (second receive window) settings use a fixed data rate and frequency. 899 Default parameters are 923.3 MHz / DR8. 900 901 Uplink Data Rate Downlink Data Rate RX1DROffset 0 1 2 3 DR0 DR10 DR9 DR8 DR8 DR1 DR11 DR10 DR9 DR8 DR2 DR12 DR11 DR10 DR9 DR3 DR13 DR12 DR11 DR10 DR4 DR13 DR13 DR12 DR11 DR5 DR10 DR9 DR8 DR8 DR6 DR11 DR10 DR9 DR8 DR7 DR14 DR13 DR12 DR11 DR8 DR0 DR14 DR13 DR12 Table 26: US902-928 downlink RX1 data rate mapping 7 902 The allowed values for RX1DROffset are in the [0:3] range. Values in the range [4:7] are 903 reserved for future use and end-devices SHALL NOT accept these settings in any command, 904 neither a RXParamSetupReq, which SHALL cause a negative acknowledgement of 905 RX1DROffsetACK in RXParamSetupAns, nor a Join-Accept which SHALL be silently 906 ignored. 907 908 7 Re-defined in the LoRaWAN 1.0.1 specification to eliminate downlink data rates.