Actually those are DMEs. Look at the approach plate I referenced in the email I just sent--I just noticed something I missed...this statement:
"Procedure not available without DME I-TH or radar" It's in the text box towards the top of the plate. I missed this, because it's generally *not* done like this in the US...DME located just off the end of the runways. But it makes perfect sense--put a DME right off the departure end of the runway to give you a perfect reference for distance on the approach. Many times in the US, a DME will be located on the field, but not usually with the localizer (as it appears these might be.) So those are not two localizers--they are DMEs. One (I-TH) would be for the ILS/DME/NDB RWY 24 approach, while the other would be for the approach for RWY 6. Check out this plate: http://www.nats-uk.ead-it.com/aip/current/ad/EGPH/EG_AD_2_EGPH_8-1_en.pdf ...for the ILS/DME RWY 06. Note the I-VG DME associated with the 108.90 MHz LOC frequency on that plate. Sorry for two posts so quickly--I haven't used this stuff in a few years, so I'm a bit rusty...and of course the nomenclature is slight different than that on US approach plates. TB On Sep 15, 2009, at 5:11 PM, James Turner wrote: > > On 15 Sep 2009, at 22:59, Thomas Betka wrote: > >> But each LOC >> on an airfield has it's own frequency > > This is where the problems start: > > http://www.nats-uk.ead-it.com/aip/current/ad/EGPH/EG_AD_2_EGPH_2-1_en.pdf > > IVG and ITH share the same frequency - 108.9Mhz, and there's some > circuit/switch/etc in the tower to activate one DME/LOC/GS trio or the > other. > > Aside from that, I think everything you said was correct - as ever, I > am not a pilot. > > The good news is, I think I've come up with a more consistent > heuristic (to make Curt happy!) than the current one. > > Regards, > James > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart > your > developing skills, take BlackBerry mobile applications to market and > stay > ahead of the curve. Join us from November 9-12, 2009. Register > now! > http://p.sf.net/sfu/devconf > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
