How to Determine the Frequency Band of a Heltec V3 LoRa Board?LoRa development boards comes in three different frequency bands--915 MHz, 868 MHz, 433 MHz--for different regions. See "LoRa Communication Frequency Bands" for more details. But some development boards, such as the Heltec V3 LoRa doesn't provide clear indication of the band. I will demonstrate how to determine the frequency band with the V3.1 board (see photo below). Duke If you look at the bottom of this board, you'll see two resistors--LF and HF--mount points located above the Heltec Automation Brand (see photo below). For 915 MHz, a 0-ohm resistor will be installed in the HF position. HF probably stands for high frequency. Duke
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