Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 16 of 55 The authors reserve the right to change specifications without notice. 0 19 11 1 61 53 2 133 125 3 250 242 4 250 242 5:7 Not defined 8 41 33 9 117 109 10 230 222 11 230 222 12 230 222 13 230 222 14:15 Not defined Table 14: US902-928 maximum payload size (repeater compatible) 474 475 The greyed lines correspond to the data rates that may be used by an end-device behind a 476 repeater. 477 If the end-device will never operate under a repeater then the maximum application payload 478 length in the absence of the optional FOpt control field should be: 479 480 DataRate M N 0 19 11 1 61 53 2 133 125 3 250 242 4 250 242 5:7 Not defined 8 61 53 9 137 129 10 250 242 11 250 242 12 250 242 13 250 242 14:15 Not defined Table 15 : US902-928 maximum payload size (not repeater compatible) 481 2.2.7 US902-928 Receive windows 482 The RX1 receive channel is a function of the upstream channel used to initiate the 483 data exchange. The RX1 receive channel can be determined as follows. 484 o RX1 Channel Number = Transmit Channel Number modulo 8 485 The RX1 window data rate depends on the transmit data rate (see Table 16 below). 486 The RX2 (second receive window) settings uses a fixed data rate and frequency. 487 Default parameters are 923.3MHz / DR8 488 489 Upstream data rate Downstream 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