On 12/31/2008 11:46 PM, Alex Perry wrote: >> If you want more >> detail than the handwave that the AIM contains, go read the FAA >> technical manual on how to design and deploy LOC antenna arrays ..
Found it. In such matters, the FAA defers to the ICAO. http://dcaa.slv.dk:8000/icaodocs/Annex%20X%20-%20Aeronautical%20Telecommunications/Volume%20I%20-%20Radio%20Navigation%20Aids/Vol.1%20-%206th%20Edition,%20July%202006.pdf See in particular paragraph 3.1.3.7.1. Basically the rule is 210 m at threshold, with complex exceptions for short runways. It never exceeds 6 degrees full width (peg to peg). I see absolutely no mention of any clipping at the low end. ======================== More generally, http://dcaa.slv.dk:8000/icaodocs/ is a large trove of authoritative ICAO documents. I suspect some people on this list will want to copy the entire tree. ------------------------------------------------------------------------------ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
