Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3098

b) For the Doppler VOR, the percentage of amplitude modulation of the 9 960 Hz subcarrier shall not exceed 40 per cent when measured at a point at least 300 m (1 000 ft) from the VOR. 2007/70/II. szám Annex 10 — Aeronautical Communications Volume I 23/11/06 3 30 3.3.5.7 Where 50 kHz VOR channel spacing is implemented, the sideband level of the harmonics of the 9 960 Hz component in the radiated signal shall not exceed the following levels referred to the level of the 9 960 Hz sideband: Subcarrier evel 9 960 Hz 0 dB reference 2nd harmonic 30 dB 3rd harmonic 50 dB 4th harmonic and above 60 dB 3.3.6 Voice and identification 3.3.6.1 If the VOR provides a simultaneous communication channel ground-to-air, it shall be on the same radio frequency carrier as used for the navigational function. The radiation on this channel shall be horizontally polarized. 3.3.6.2 The peak modulation depth of the carrier on the communication channel shall not be greater than 30 per cent. 3.3.6.3 The audio frequency characteristics of the speech channel shall be within 3 dB relative to the level at 1 000 Hz over the range 300 Hz to 3 000 Hz. 3.3.6.4 The VOR shall provide for the simultaneous transmission of a signal of identification on the same radio frequency carrier as that used for the navigational function. The identification signal radiation shall be horizontally polarized. 3.3.6.5 The identification signal shall employ the International Morse Code and consist of two or three letters. It shall be sent at a speed corresponding to approximately 7 words per minute. The signal shall be repeated at least once every 30 seconds and the modulation tone shall be 1 020 Hz within plus or minus 50 Hz. 3.3.6.5.1 Recommendation The identification signal should be transmitted at least three times each seconds spaced e ually within that time period ne of these identification signals may ta e the form of a voice identification Note here a R and DME are associated in accordance with the identification provisions of influence the R identification 3.3.6.6 The depth to which the radio frequency carrier is modulated by the code identification signal shall be close to, but not in excess of 10 per cent except that, where a communication channel is not provided, it shall be permissible to increase the modulation by the code identification signal to a value not exceeding 20 per cent. 3.3.6.6.1 Recommendation If the R provides a simultaneous communication channel ground to air the modulation depth of the code identification signal should be plus or minus per cent in order to provide a satisfactory voice uality 3.3.6.7 The transmission of speech shall not interfere in any way with the basic navigational function. When speech is being radiated, the code identification shall not be suppressed. 3.3.6.8 The VOR receiving function shall permit positive identification of the wanted signal under the signal conditions encountered within the specified coverage limits, and with the modulation parameters specified at 3.3.6.5, 3.3.6.6 and 3.3.6.7. 3.3.7 Monitoring 3.3.7.1 Suitable equipment located in the radiation field shall provide signals for the operation of an automatic monitor. The monitor shall transmit a warning to a control point, and either remove the identification and navigation components from the carrier or cause radiation to cease if any one or a combination of the following deviations from established conditions arises: 2007/70/II. szám C a ter Annex 10 — Aeronautical Communications 3 31 23/11/06

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