ITU-R BT 565-1978 Protection Ratios for 625-Line Television Against Radionavigation Transmitters Operating in the Shared Bands between 582 and 606 MHz - Section 11E - Planning of Ton R.pdf

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1、COPYRIGHT International Telecommunications Union/ITU RadiocommunicationsLicensed by Information Handling Services-3 -2 -1 O 1 2 3 4 5 6 7 8 9 10 Frequency separation with respect to the vision carrier (MHz) FIGURE 1 - Protection ratio required by system L, G, I and K picture signals against a radion

2、avigation signal in the band 582 to 606 MHz 2. Protection ratios required when the radionavigation signal falls outside the passband of the television receiver Reference should be made to Recommendation 655 for image channel interference. No information exists at present on adjacent channel interfer

3、ence. Note - Other interference effects (intermodulation) are likely to occur if radionavigation stations, which in general use high peak powers and highly directional antennas, are situated near receiving locations, especially where the television signal is weak. COPYRIGHT International Telecommunications Union/ITU RadiocommunicationsLicensed by Information Handling Services