User's Manual

11
RAK2245 Pi HAT
11
RAK2245 Pi HAT User Manual V1.2
e 8 | TX RF Characteristics
2.11.2
Receiver RF Characteristics
We recommended you to use optimized RSSI calibration values which is part
of HAL v3.1. For both Radio 1 and 2, the RSSI-offset should be set to -169.
The following table gives typical sensitivity level of RAK2245 Pi HAT.
Table 9 | RX RF Characteristics
Note: The US915 Band only support 500kHz bandwidth.
TX Frequency Variation vs.
Temperature
Power Level
Setting : 20
-3 KHz
+3 KHz
TX Power Variation vs.
Temperature
-5 dBm
+5 dBm
TX Power Variation
-1.5 dBm
+1.5 dBm
Signal Bandwidth/[KHz]
Spreading Factor
Sensitivity/[dBm]
125
12
-139
125
7
-126
250
12
-136
250
7
-123
500
12
-134
500
7
-120