The present document specifies the minimum performance parameters for terrestrial digital fixed service radio
communications equipment operating in the 1,4 GHz frequency bands. The requirements and limits given in the present
document are relevant to all environmental conditions for the chosen climatic class. The test methods to be used are
currently under study in ETSI STC TM4.
Digital systems are intended to be used for point-to-point connections in local and regional networks at data rates
between 9,6 kbit/s and 4x2 Mbit/s. Other data rates may also be foreseen. Typical applications include:
a) customer connections;
b) Integrated Services Digital Network (ISDN) extension;
c) mobile base station connections;
d) telemetry and telecontrol, including transportable and off-shore use.
ITU-R high, medium and local grade performance objectives, i.e. ITU-R Recommendations F.634-4 [14], F.696-2 [4],
F.697-2 [5], ITU-T Recommendation G.821 [7] and the forthcoming performance objectives detailed in
ITU-T Recommendation G.826 [8] should be realizable using systems considered in the present document.
The parameters to be specified fall into two categories:
a) Those that are required to provide compatibility between channels from different sources of equipment on the
same route, connected either to:
- separate antennas; or to
- separate polarizations of the same antenna.
b) Parameters defining the transmission quality of the proposed system.
The present document deals with Intermediate Frequency (IF), Radio Frequency (RF) and baseband characteristics
relevant to low capacity Plesiochronous Digital Hierarchy (PDH) transmission. Antenna/feeder system requirements are
covered in EN 300 631 [12].
Due to the wide spread of applications and corresponding system rates, parameters such as RF spectrum masks and
receiver sensitivity are related to standardized channel spacings rather than to minimum system rates. Th (...abbreviated)