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Aim 1.1.7.f says:
"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." I listened to my local VOR (TPL) with this in mind, but could not discern between the VOR and the DME ident tones. Surely I should be able to hear the difference between 1020 and 1350 hz? Is there an exception or other protocol which could be at play here? Thanks, John Clonts Temple, Texas |
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