Feature:1. For LoRa antenna that can be used indoor and outdoor, industrial design, durable Radome fiberglass, excellent waterproof and high temperature resistance.2. Compatible with HNT RAK Helium Hotspot Miner V2 V1 Bobcat Miner 300 syncrob is Dragino LPS8 MatchX M2 Pro Longfi LoRaWAN3. If it is used outdoors, we recommend that you install it in an open place, if it is used indoors, we recommend that you place it near a window.4. If there is no signal change when using this antenna for the first time, please turn off the power of the device, then plug in the antenna, and then turn on the power again. Outdoor Antenna, LORA Antenna Outdoor Omnidirectional LTE Fiberglass Antenna Long For Fresh Air-Receiving AntennaThe antenna has an n-male connector, so it can be easily connected to the gateway and all other helium miners. The antenna can be used in any environment that requires LoRa connection over long distances, for agriculture, environmental monitoring and urban monitoringSuitable for miner (recommended by helium):BobcatNebra (indoor/outdoor)RAK wirelessRAK2 wirelessSyncrobitCal-ChipLongAPSensecapKerlinkSpecification:Brand: STARFConnderConnector: n-maleType: Omnifiberglass antennaFrequency: 860-930MHz (eu 868MHz, usa 915MHz)Cable: RG58Cable length: 8 metersPolarization: polarization verticalGain: 10-12DBIstanding wave ratio: ge; 1.3 (dB)Impedance: 50 ohm Material: Fiberglass Connector Material: Copper Working Temperature: -40 - +85 Celsius Length: 550mm Relative Humidity: Up to 95% Package Included:1 * Set with AntennaNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Manual measurement, please allow 1-10mm error. Thank you for your understanding.