This Report discusses the role of spectrum monitoring in support of inspections, supported with examples. Where the link of spectrum monitoring with inspections is very strong or direct we can speak of monitoring in support of inspections. To avoid misunderstanding it needs to be clarified that this support and “on site inspections” are not interchangeable but could be complementary in the total inspection process. The Report also contains national examples of prototypes and operational monitoring mechanisms in the form of annexes. The task of conducting spectrum monitoring in support of inspections is not new but superior results are obtained due to improvements in automatic control of monitoring equipment.