European Radiocommunications Committee - ERC Decision of 20 March 1998 on the Adoption of Approval Regulations for Equipment to be Used for Radio Relay Systems Operating in the Fixed Service for the Transmission of Digital Signals and Analogue Video Signals Operating between 21.2 GHz and 23.6 GHz, Based on the European Standard (Telecommunications Series) EN 300 198 V1.2.1