Timeline for Instrument landing: why do all electronic devices need to be shut off?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Jun 2, 2015 at 14:28 | comment | added | Fattie | "[Source: I design RF receivers for a living.]" Awesome .. I love the rare occasions you see sound info on the internet! :) | |
| Jan 9, 2015 at 20:45 | comment | added | voretaq7 | I have pruned several comments. Please take any further discussion of citations/credentials/etc. to Meta - comments are really not the place for that sort of thing. | |
| Jan 9, 2015 at 19:41 | comment | added | reirab | @rbp Yes, those are the carrier frequencies. You tune the carrier frequency for the localizer on your NAV radio and, on aircraft equipped for ILS, it automatically tunes the corresponding glideslope carrier frequency. As mentioned in the answer, in the case of both the localizer and the glideslope, those carriers are amplitude modulated at 90 Hz and 150 Hz. | |
| Jan 9, 2015 at 19:30 | comment | added | reirab | @Thebluefish To some extent, VOR and DME fixes can be used, but, as I mentioned in the answer, the precision there is not as much as you'd typically want, particularly on short final. Nowadays, GPS can be used. Someone more familiar with airliners than myself could probably provide better input, but I'd assume that the inertial navigation systems could also help between GPS/radionav fixes. | |
| Jan 9, 2015 at 19:12 | comment | added | rbp | Instrument Landing System (ILS) frequences Localizer: 108.1-111.95 MHz Glide Slope: 329.15-335.0 MHz en.wikipedia.org/wiki/… | |
| Jan 9, 2015 at 19:10 | comment | added | BlueBuddy | +1 for the amazing explanation. One question: Is there any checks done for ensuring the localizer is proper? It sounds like checking altitude is good enough for detecting issues with the GS only. | |
| Jan 9, 2015 at 12:28 | vote | accept | Nicola Miotto | ||
| Jan 8, 2015 at 17:15 | comment | added | Nicola Miotto | so far, this is the only answer I've got with a practical explanation of the possible issue, with very well explained technical details (there were some a bit obscure points in the wikipedia explanation that were perfectly clarified here). At the moment this is the candidate to be accepted. | |
| Jan 8, 2015 at 15:48 | history | edited | reirab | CC BY-SA 3.0 |
added 47 characters in body
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| Jan 8, 2015 at 15:41 | history | answered | reirab | CC BY-SA 3.0 |