Full explanation
Accuracy comparison: WAAS/EGNOS (free) ±30–50 cm; SBAS SF1/SF3 (free or basic subscription) ±15–30 cm; L-Band (OmniStar, StarFire, CenterPoint RTX) — paid subscription, ±5–10 cm; RTK ±2–3 cm. In Ukraine common options: (1) own on-farm RTK base station (JD RTK StarFire, Trimble, Topcon) — one-time UAH 250k–450k + UAH 60k/yr support; (2) RTK networks SmartNet, Ukrgeodeziya CORS — subscription UAH 15k–40k/yr per machine; (3) VRS (Virtual Reference Station) — interpolated from multiple base stations. RTK + autosteer delivers: 3–5% fuel savings (fewer overlaps), 5–10% seed and fertilizer savings (precise rows), night work capability, reduced operator fatigue. CTF application (narrow permanent tramlines at 3 or 4 m) — cuts soil compaction on 70–85% of field area, raises yield 5–12% with consistent use.