Could it have been some harmonic frequency of a terrestial lower frequency radio signal (such as 710MHz) that bounced off ionosphere?
That frequency range is currently assigned to mobile, but I suppose it could have been in TV/Broadcast use back then as it's right next to that spectrum.
Could it have been some harmonic frequency of a terrestial lower frequency radio signal (such as 710MHz) that bounced off ionosphere?
That frequency range is currently assigned to mobile, but I suppose it could have been in TV/Broadcast use back then as it's right next to that spectrum.
TV broadcast truck?