Stillwater, Oklahoma · 108.40 MHz
The Stillwater VOR/DME (SWO) transmits on 108.40 MHz, TACAN/DME channel 21X, from 1,022 ft MSL in Stillwater, Oklahoma. From the FAA’s NASR data (cycle 2026-09-03); check the current Chart Supplement and NOTAMs before you rely on it.
Where the FAA protects this VOR’s signal off published routes (AIM 1-1-8). Heights are above the transmitter, not MSL. Published routes and procedures can use a VOR beyond these limits, and the remarks below can narrow them.
For the 30-day VOR check under 14 CFR 91.171: within 4° at a ground checkpoint, 6° at an airborne one.
Each field’s radial and distance from SWO, using the station’s own 7°E alignment.
More VORs in Oklahoma, or plan a route through SWO in the Route Planner.