,This Part 3, which should be used in conjunction with IEC Publication 244-1 and, if applicable with other parts of IEC Publication 244, describes the conditions and methods of measurement .for assessing the performance with respect to wanted and unwanted modulation ,The methods, specified in this Part 3, apply to transmitters for various classes of emission except television transmitters and transmitters used in radio-relay systems and radio determination .systems For transmitters for monochrome and colour television, reference is made to Section Seven .of IEC Publication 244-5 For transmitters used in radio-relay systems, reference is made to a separate IEC Publication .which is still under consideration