This video will describe how to use a simple RF power watt meter to measure output power of any radio transmitter from 1 MHz to 8000 MHz. This is a handy tool to measure the output power of LoRa radio modules. Power Meter: https://www.banggood.com/RF-Power8000-1Mhz-8000Mhz-OLED-RF-Power-Meter-55dBm-5dBm-Adjustable-Attenuation-Value-p-1208585.html?rmmds=search&cur_warehouse=CN Attenuator: https://www.banggood.com/2W-SMA-JK-Male-to-Female-RF-Coaxial-Attenuator-6GHz-50ohm-20dB-Connectors-p-1079176.html?rmmds=search&cur_warehouse=CN