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APT Test Backplane

  • Compatible with HT-AT62.
  • Only this bottom board, not include any other modules;
  • Not include Battery and antenna;
  • Include SH1.25 x 2 battery connecter.
filter 1

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