ITU-R QUESTION 209/4-1993 The use of frequency bands allocated to the fixed-satellite service for both the up and down links of geostationary-satellite systems
The ITU Radiocommunication Assembly considering a))that the utilization of the geostationary-satellite orbit may be improved by sharing frequencies between up links and down links of the same and/or different services, i.e. reverse-band working;b)that reverse band working is particularly useful where services are unidirectional such as bands used for broadcasting-satellite service (BSS) feeder links;c)that fixed-satellite service (FSS) down links could share frequencies with BSS feeder links;d)that interference from reverse band emissions into the receivers of geostationary space stations in antipodal locations might arise.
ITU-R QUESTION 209/4-1993 history
1993ITU-R QUESTION 209/4-1993 The use of frequency bands allocated to the fixed-satellite service for both the up and down links of geostationary-satellite systems