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LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 86 of 101 The authors reserve the right to change specifications without notice. If the end-device will never operate with a repeater, the maximum application payload length 1759 in the absence of the OPTIONAL FOpts control field SHOULD be: 1760 1761 Data Rate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 250 242 5 250 242 6 250 242 7 250 242 8:15 Not defined Table 94: RU864-870 maximum payload size (not repeater compatible) 1762 2.13.7 RU864-870 Receive Windows 1763 By default, the RX1 receive window uses the same channel as the preceding uplink. The data 1764 rate is a function of the uplink data rate and the RX1DROffset, as given by the following 1765 table. The allowed values for RX1DROffset are in the [0:5] range. Values in the [6:7] range 1766 are reserved for future use. 1767 Upstream Data Rate Downstream Data Rate RX1DROffset 0 1 2 3 4 5 DR0 DR0 DR0 DR0 DR0 DR0 DR0 DR1 DR1 DR0 DR0 DR0 DR0 DR0 DR2 DR2 DR1 DR0 DR0 DR0 DR0 DR3 DR3 DR2 DR1 DR0 DR0 DR0 DR4 DR4 DR3 DR2 DR1 DR0 DR0 DR5 DR5 DR4 DR3 DR2 DR1 DR0 DR6 DR6 DR5 DR4 DR3 DR2 DR1 DR7 DR7 DR6 DR5 DR4 DR3 DR2 Table 95: RU864-870 downlink RX1 data rate mapping 1768 The RX2 receive window uses a fixed frequency and data rate. The default parameters are 1769 869.1 MHz / DR0 (SF12, 125 kHz) 1770 2.13.8 RU864-870 Class B Beacon and Default Downlink Channel 1771 The beacon frame content is defined in section 4.1.3. 17 1772 The default beacon data rate is DR3. 1773 The default beacon broadcast frequency is 869.1 MHz. 1774 The default class B downlink ping-slot frequency is 868.9 MHz. 1775 2.13.9 RU864-870 Relay Parameters 1776 The WOR default channels are: 1777 Channel Index 0 1 Frequency WOR (MHz) 866.1 866.5 Frequency WOR ACK (MHz) 866.3 866.9 SF SF9 BW BW125 Table 96: RU864-870 WOR default channel 1778

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