i-PEX to SMA Female Pigtail 15cm

The Paradar SAW filter is crucial for LoRa deployments in urban environments. Why? Because 4G cellular towers in Europe and the UK, operating on 4G Band 20, work on frequencies as high as 862MHz. A high-gain antenna in an urban environment is going to pick up a lot of this RF energy, which your 868MHz LoRa device will need to filter out.