If I'd had a quid for every time I'd had to explain why HF couldn't be used for close in comms to IDROs/TPOs and FCs who should have know better when I was down south I'd have about er......£37, don't know why I bothered, they never believed me! You'd think they'd never read the 3430!
And don't get me started on KY75 (oo-er)