Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 3105

c) local conditions. Note In selecting the types of emission the possibility of confusion arising from an aircraft tuning from a N N A A facility to a N N A A facility without changing the radio compass from MC to C operation will need to be ept in mind 3.4.6.2 For each NDB identified by on/off keying of an audio modulating tone, the depth of modulation shall be maintained as near to 95 per cent as practicable. 3.4.6.3 For each NDB identified by on/off keying of an audio modulating tone, the characteristics of emission during identification shall be such as to ensure satisfactory identification at the limit of its rated coverage. 2007/70/II. szám C a ter Annex 10 — Aeronautical Communications 3 3 23/11/06 Note The foregoing re uirement necessitates as high a percentage modulation as practicable together with maintenance of an ade uate radiated carrier power during identification Note ith a direction finder pass band of plus or minus about the carrier a signal to noise ratio of d at the limit of rated coverage will in general meet the foregoing re uirement Note Some considerations with respect to modulation depth are contained in Attachment C 3.4.6.4 Recommendation The carrier power of an ND with N N A A emissions should not fall when the identity signal is being radiated except that in the case of an ND having an average radius of rated coverage exceeding m ( NM) a fall of not more than d may be accepted 3.4.6.5 Unwanted audio frequency modulations shall total less than 5 per cent of the amplitude of the carrier. Note Reliable performance of airborne automatic direction finding e uipment (ADF) may be seriously prejudiced if the beacon emission contains modulation by an audio fre uency e ual or close to the loop switching fre uency or its second harmonic The loop switching fre uencies in currently used e uipment lie between and 3.4.6.6 The bandwidth of emissions and the level of spurious emissions shall be kept at the lowest value that the state of technique and the nature of the service permit. Note Article S of the ITU Radio Regulations contains the general provisions with respect to technical characteristics of e uipment and emissions The Radio Regulations contain specific provisions relating to necessary bandwidth fre uency tolerance spurious emissions and classification of emissions (see Appendices APS APS and APS ) 3.4.7 Siting of locators 3.4.7.1 Recommendation here locators are used as a supplement to the I S they should be located at the sites of the outer and middle mar er beacons here only one locator is used as a supplement to the I S preference should be given to location at the site of the outer mar er beacon here locators are employed as an aid to final approach in the absence of an I S e uivalent locations to those applying when an I S is installed should be selected ta ing into account the relevant obstacle clearance provisions of the PANS-OPS (Doc ) 3.4.7.2 Recommendation here locators are installed at both the middle and outer mar er positions they should be located where practicable on the same side of the extended centre line of the runway in order to provide a trac between the locators which will be more nearly parallel to the centre line of the runway 3.4.8 Monitoring 3.4.8.1 For each NDB, suitable means shall be provided to enable detection of any of the following conditions at an appropriate location:

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