Inter-spin distance determination using L-band (1-2Â GHz) non-adiabatic rapid sweep electron paramagnetic resonance (NARS EPR)

► Inter-spin distances were measured using L-band NARS EPR in two systems. ► The upper limit of the CW distance determination technique was increased to ≥26 Å. ► L-band measurements were independent of angular terms in the dipolar function.