We present a unique set of wave and particle measurements taken by the S3-3 satellite on August 2, 1976, from which we infer that signals from a ground-based VLF transmitter were ducted up to the equatorial plasma sheet region by a detached region at L~4.5. The waves resonated with the ~1 keV plasma sheet electrons, producing narrowband emissions that were received in the conjugate hemisphere by the S3-3 satellite at L~3.