I am quite new to LoRa and I’d like to jump in straight by creating a small test network made of one gateway and some repeater nodes. I live in a rural area and got a permit to temporarily increase the output power in the 433MHz band up to 2W, while keeping restrictions about duty cycle.
For the repeater nodes I was looking at the ebyte modules but there are so many to choose from that things get complicated.
The ones that seem interesting are:
E22 (UART) http://www.ebyte.com/en/product-view-news.aspx?id=939
E22 (SPI) http://www.ebyte.com/en/product-view-news.aspx?id=454
E62 (Full Duplex?) http://www.ebyte.com/en/product-view-news.aspx?id=224
I excluded the E32 as it uses the older SX1278 module while the E22 mounts the newer SX1268 . I prefer the UART version as it’s more suited for protoboards but the SPI version claims to use a special LoRaTM modulation method able to increase its range of 4km when compared to the UART one.
How is it possible?