Tuc
The problem of concern with the SuperTANS at the time was not interference, etc but fundamental accuracy.
Robin C
CPLS gave very accurate range but was limited to about +/_ 4 degrees in bearing - good enough to home in on someone you wanted to pick up.
There's plenty of info on it - just got to read, understand, and not go off half cock.
Were you on about a co-located VOR/DME?, they're a bit better for you to try.