In order to understand the role of electrical properties in the vicinity of VAN stations, that have already been found to be appropriate for the collection of seismic electric signals (SES), a magnetotelluric (MT) investigation was carried out over of the entire VAN network. We present preliminary MT results for two stations of the VAN telemetric network in continental Greece. A procedure was developed by which a “real time” subtraction of the telluric inductive component from the electric measurements can be made. The resulting real time recording of the residual electric field allows a better identification of the SES. Such an example is presented for an SES that preceded a 5.5 magnitude earthquake in western Greece.