Broadcasting-satellite service in other frequency ranges than at 12 GHz

It is pointed out that the development of the broadcasting-satellite service within the last 15 years can be considered as one of the most important stages in the history of radio technology. Most suitable for an introduction of this service appeared the range at 12 GHz (11.7-12.5 GHz), and satellites are being developed for operation in this frequency range. It is predicted that these systems will be in operation at least at the end of the decade. The question is considered whether these developments represent a solution for all problems regarding a broadcasting-satellite service. It is found that this is not the case. A number of problems cannot be solved at all on the basis of the use of the 12 GHz-band. An investigation is conducted concerning the possibilities provided by other frequency bands. Attention is given to sound broadcasting via satellites, systems with a large angle of elevation, and aspects concerning the implementation of television with high image resolution.