External Filter (863~870MHz)


Heltec’s external filters are easy to use and can be integrated directly into hotspot devices. Our filter can reduce noise, increase signal-to-noise ratio, and increase the reception range of EU868 machines running V1.0/V1.1, resulting in the filter receiving the node’s signal continuously and reliably.

  • Center frequency: 866.5MHz
  • Frequency range: 863~870MHz
  • Insertion loss: 2.3dB
Category: SKU: ZC-122


The external filter can be used to reduce environmental noise and improve the analysis ability of LoRa signal.