9
RAK7243
9
RAK7243 User Manual V1.1
2.8
LoRa RF Characteristics
2.8.1
Transmitter RF Characteristics
The RAK
2245
has an excellent transmitter performance. It is highly
recommended to use an optimized configuration for the power level
configuration, which is part of the HAL. This results in a mean RF output power
level and current consumption.
Note
：
The maximum output power setting should not exceed 11.73dBm.
Table 4 |
RF Output Power Level
T=25
℃
, VDD=5V(Typ.) if nothing else stated.
PA Control
DAC Control
MIX Control
DIG Gain
Nominal RF Power
Level
0
3
8
0
-6 dBm
0
3
10
0
-3 dBm
0
3
14
0
0
1
3
9
3
4 dBm
1
3
8
0
8 dBm
1
3
9
0
10 dBm
1
3
11
0
12 dBm
1
3
12
0
14 dBm
1
3
13
0
16 dBm
2
3
12
0
17 dBm
2
3
13
0
19 dBm
2
3
14
0
20 dBm
3
3
10
0
0
3
3
11
0
0
3
3
12
0
25 dBm
3
3
13
0
26 dBm
3
3
14
0
27 dBm
Parameter
Condition
Min
Typ.
Max
Frequency Range
903 MHz
927.5 MHz
Modulation Techniques
FSK/LoRaTM
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
