The telescopes in the array can operate at several frequencies between 120 MHz and 8.3 GHz with an instantaneous bandwidth of 120 MHz and 8092 line spectral resolution. The WSRT is often combined with other telescopes around the world to perform Very Long Baseline Interferometry (VLBI) observations, being part of the European VLBI Network. The telescope is operated by ASTRON, the Dutch foundation for astronomy research.
The WSRT is scheduled for another upgrade around 2013 as part of the APERTIF project where the current detectors will be replaced with Focal Plane Arrays. This will allow a 25x larger field of view and will be used for large scale surveys of the northern sky, bringing back focus on the Hydrogen line for which it was originally designed, but also large pulsar searches and other science.