Disappearance of Short Wave Time Signals at 5, 10, 15, 20kHz


Thirty years ago, that ticking atomic clock could be picked
up on any shortwave receiver, whether one paid $40 or
$400 for it, or even on the boom-boxes of that day, of
which the majority featured at least SW1 & SW2. Starting
in the 1990s, it became increasingly more difficult to tune
them in, even with a dedicated shortwave radio. They'd
come in on only certain of those frequencies, or only at
certain times of day.

Now, they are all but inaudible except for once in a while,
every other day, on one frequency or another. All I hear at
those frequencies is loud static or noise.

What's going on?? I actually use the signals to adjust 'dumb'
clocks and watches(windup ones or basic battery ones).