The big plus with these tuneable receivers is that if you're getting interference, you can very slightly de-tune to improve reception - the signal strength meter might be picking up interference. Harks back to the days of trying to tune in Radio Luxemburg - '208, your station of the stars!' Maybe you'll be able to get the Light Programme, or if you're a serious wireless listener, the Home Service. We still get that, locally, on 756 kHz, very handy for practice holds.
If you have such an ADF and it still works, then I'd hang on to it, for as long as there are NDBs about, of course, which might be quite some time.
TOO