-HAROGIC HDA Series Active Directional Antenna Product Manual V1.1(6/24/2026)
* Added: VSWR plots of the HDA-100 and HDA-200 in both bypass and amplification operating modes.
* Revision: Pitch angle range corrected from -90° to +90° to -180° to +180°.

- HAROGIC HDA Series Active Directional Antenna Product Manual V1.0 (5/6/2026)
* Added: Specifications, gain plots, antenna factor plots, and radiation patterns of the HDA-200 active directional antenna.
* Added: Specifications for attitude and heading measurement, as well as angle measurement.