An overview is given of high-rate gamma spectroscopy as it is related
to the field of activation analysis of short-lived isomeric transition
s. The transistor reset preamplifier is a prerequisite for HRGS and gi
ves optimum performance together with n-type HPGe detectors. Gated int
egrators are replaced as pulse processors for HRGS by the recently dev
eloped Preloaded Filter. A digital implementation of the PLF guarantee
s very good resolution, excellent stability and high throughput rate w
ithout A/D-conversion dead-time.