NEXTION 4PCS U.FL IPEX to SMA Connector Pigtail Antenna 3dBi 868-915MHz for Lora Board IOT Lora32u4 II WiFi Lora32 Lora Module, for Internet of Things WIshiOT

Good design

I have no idea what these are or what frequency they are tuned to. They are very short. A monopole LORA antenna should be at least 3.23 in long. We tried them out in a LORA system and got less than half the range, compared to a 3.23 piece of wire as an antenna.

I use these antennas on LoRa end devices for the US915 band and they are good for development/testing purposes in the lab.

Antenna tuned below 900MHz. 4:1 VSWR was measured at 900 MHz on all 4 units. Returned item.

Exactly what I needed