Hi, For our testing reports, we used something similar to this: from network import LoRa import socket import machine import time # initialise LoRa in LORA mode # Please pick the region that matches where you are using the device: # Asia = LoRa.AS923 # Australia = LoRa.AU915 # Europe = LoRa.EU868 # United States = LoRa.US915 # more params can also be given, like frequency, tx power and spreading factor lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868) lora.frequency(868000000) # create a raw LoRa socket s = socket.socket(socket.AF_LORA, socket.SOCK_RAW) while True: # send some data s.setblocking(True) s.send('Hello') print("send packet") This puts the module in continuous transmission mode using the most simple modulation format. There is no hardware routine in the LoRa radio that supports the CW mode.