Originally Posted by b377
Read Graybeards comments above? His delays are wound cable.
Yes, I did ..... and no.
The
nominal cable length (which is part of the AID) is always a bit more than is needed for installation, to allow for re-routing, different a/c variants, etc. The
excess length is then coiled.
If a cable gets damaged (does happen) an exact equivalent length of cable is spliced or connected back in.
CJ
Answer to your edit...
Graybeards a/c specific delay is 57m of coiled cable !
Nope!
It's 57 ft, not 57 m.
And it's not the cable, it's the total signal path from transmitter output to receiver input, at the moment of touchdown of the main wheels.
So it's TX output > cable > aerial > ground > receiver aerial > cable > RX input.
Do the sums, but cable lengths are probably in the order of 15 + 15 ft .