[RFI] OT? Why Does 1450 Wobble & 970 Not?

[Andrew Ingraham]

> It is that usual late afternoon/early evening sound
> common to AM signals - kinda distorted and drifting -
> it's not a frequency change but rather a propagation
> thing.

If it's random, it might be fading, due to skywave and changing
ionospherics.  The lower frequency may be less effected by it because of a
more solid groundwave.

If it's regular, it might be a beat frequency between it and another station
a few Hz away.

You often hear both effects, especially at night.

Andy