Table 18 and Figures 77 through 86 show that Amplitron design and filtering techniques are of the utmost importance in minimizing RFI with other users and hence for achieving national and international agreement on frequency allocation for the SSPS as a service. TABLE 18 SERVICE FREQUENCIES - CASES (a) AND (b) Type of Service ______ ___ Case (a) Case (b) 2 Section 4 Section 2 Section 4 Section Radio Astronomy ± 10s MHz + 4500 MHz ± 500 MHz ± 160 MHz with offset ± 8000 MHz ± 1000 MHz ± 175 MHz ± 95 MHz Tropo + 1500 MHz ± 400 MHz ± 85 MHz ± 55 MHz Radar ± 1400 MHz ± 460 MHz ± 100 MHz ± 60 MHz In summary, there are identifiable approaches which could reduce RFI to internationally acceptable levels. The following listing provides a qualitative overview of RFI. SSPS Fundamental Frequency 3300 MHz Interference (< 2535 MHz) TROPO Service < „ None | > 4400 MHz ( Radio Astronomy (< 2700 MHz) Slight Shipborne Radar (< 3100 MHz) Partial Fixed Microwave (> 3700 MHz) Slight and Communications Amateur Sharing j State Police Radar / (3100 MHZ tO Radio Location from 13700 MHz) bupstantiai High Power Defense Radar' NOTE: The data presented here indicating interferences and re-allocations should not be interpreted as being possibly acceptable. Rather they are an identification of small bands of frequency requiring much investigation to determine impact before recommendation as to acceptability could be contemplated.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==