The Sparkfun LoRa 1W Breakout has proven its long-range capabilities with successful broadcasts up to 12 miles (19.31 km) line-of-sight. However, the range can vary depending on the specific conditions of your setup.
Setting up the SX1276 LoRa transceiver from Semtech is a breeze with the provided example sketches. Moreover, the RadioLib Arduino Library simplifies advanced configuration and protocols such as AX.25, Hellschreiber, Morse, RTTY, and SSTV.
As part of the SparkX product line, these are rapidly produced to deliver the latest technology as it becomes available. While they are tested, they come with no guarantees and live technical support is not provided. For support or to ask a question, you can visit the Sparkfun forum.
Key features of the Sparkfun LoRa 1W Breakout include its SPX1276 Based Design, 915MHz center band, 1W Power Amplifier, robust RP-SMA connector, and on-board U.FL connector.
For more detailed information, you can refer to the SX1276 Datasheet, E19-915M30S Datasheet, Arduino RadioLib Library, as well as the schematic, Eagle Files, example sketch showing power amplifier control, and Hardware repo.