My selective (that's failing) memory says, 'no'. The signal was already TANS- bound. You set the Decca up for the sole purpose of being 'trapped' on a check ride, and asked for the once in a lifetime (post mmmmm '82 ish?) Decca letdown. I lie. You also used it for passing the time on Gut trainers or the reverse. Useful over the upper channel/lower north sea.
On navs- always got on fine with them. One, a former AAITC bod on 33 had a Welsh name like 'good heavens', and did do the non stop windup about the extra dosh. We 'ad 'im though!
And Stevo on 230. He's another story!
CG
JT: just noticed you're a pilot. You never set any Fcukin thing up in 2500 hrs!