Published online by Cambridge University Press: 07 February 2017
The claims by J. Weber must be examined in the context of system time-response and signal-to-noise ratio. After briefly discussing the sources and spectral distribution of system noise, we discuss optimal time-domain filtering. Although five independent groups have searched for two-antenna coincidences, only Weber has claimed any excess at zero time lag. We present preliminary results of a high sensitivity two-antenna coincidence search.