How do you know all this? You have access to military instructions? Does any other sources?
yes, I'm reading military manuals. no, I don't use any sources and making all code myself. I'm reading something, barely understand what it's about, trying to make it, reading again, making it better and so on. it's infinite process especially after real pilots gives some advices - I'm always misunderstood something. or even mistakes in manuals, it happens too. I have some knowledge in electrics and electronics, it helps a little.
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Obstacles would lead to wrong readings but not loss of signal
exactly. same for other special conditions. will make some attempts to simulate it later.
for civil navigation double stations are common - far and close to airport, so it's possible approach runway with known azimuth from proper position. but all of them has same standard.
this key moves caret in center position, so I think it's fair to leave it.
