Originally Posted by
magpienja
Interesting....I presume that the 777 as most modern aircraft....that the ATU will be fully automatic in operation.
Also can I ask.....what do modern air craft use for a HF antenna....as you will know....generally they need to be long to cope with the long wave lengths of HF frequencies and the older a/c may have a long wire from the top of the fin to the forward fuselage.
You see nothing like that now.....so where an earth is the HF antenna on the likes of a 777.
Usually in the leading edge of the fin. Known as a notch antenna. Please don't ask me what that means or I'll start to whimper. 😁