1998IEC 61338-1-2:1998 Waveguide type dielectric resonators - Part 1-2: General information and test conditions - Test conditions
IEC 61338-1-2:1998 Waveguide type dielectric resonators - Part 1-2: General information and test conditions - Test conditions was changed to IEC 61338-1:2004 Waveguide type dielectric resonators - Part 1: Generic specification.