About Bobcat Miner 300 – The People’s Miner Bobcat Miner 300 is a high-efficiency miner hotspot for HNT . It is compatible with Helium LongFi, an architecture that combines the leading wireless LoRaWAN protocol, and the Helium Blockchain technology. The Bobcat Miner 300 is also compatible with all LoRaWAN devices.