The Simrad HS70 brings a series of new features to a traditional heading sensor including heave, rate of turn, pitch and roll output. The HS70 uses SBAS (WAAS, EGNOS, MSAS, etc.) for differential GPS positioning providing a low cost, yet highly effective heading and position based smart antenna. The HS70 delivers extremely time-to-first-fix, and excellent in-band and out-of-band interference rejection.