Labels:bulletin board | cabinet | crt screen | earth | field | grass | skep | sky | windowpane OCR: dB T 300 500 800 1000 2000 2500 ZA00 3000 Hr Freguency *CITT -37043 Alternative Recommended Frequency band with defined characteristics for Signalling System No.6 Note Below 300 Hz and above 3000 Hz the loss shall not be less than 0.0 dB bul is otherwise unspecifted FIGURE 15 Limits for overall Ioss the transfer link telative that Felerence freguency (Alternative tests contirm suitability) 2800 CCITT Becommended unspecified FIGURF relative reference confirm
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