Drag the receivers and emitter. The cut angle between the two bearings sets the shape of the error ellipse.
CEP ≈ 0.75·√(σx²+σy²) from the 1σ ellipse. Each bearing carries ±2° uncertainty; cross-range error grows with range, so a ~90° cut gives a tight, near-circular ellipse while a shallow cut stretches it along the line of sight.