Am Sonntag, 28. Januar 2007 01:00 schrieb John Denker:
> In the real world, some VOR stations and even some localizers
> have a colocated DME station ... but there are plenty that
> don't.
>
> The DME has its own Morse ident, with a distinctive higher pitch.
>From AIM 1.1.7.f

f. VOR/DME, VORTAC, ILS/DME, and LOC/DME facilities are identified by 
synchronized identifications which are transmitted on a time share basis. The 
VOR or localizer portion of the facility is identified by a coded tone 
modulated at 1020 Hz or a combination of code and voice. The TACAN or DME is 
identified by a coded tone modulated at 1350 Hz. The DME or TACAN coded 
identification is transmitted one time for each three or four times that the 
VOR or localizer coded identification is transmitted. When either the VOR or 
the DME is inoperative, it is important to recognize which identifier is 
retained for the operative facility. A single coded identification with a 
repetition interval of approximately 30 seconds indicates that the DME is 
operative.

http://www.faa.gov/airports_airtraffic/air_traffic/publications/ATpubs/AIM/Chap1/aim0101.html

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