The really, really slow bit rate (75 or 300 baud) that was common for these types of computers back then didn't require much fidelity. I remember some similar

The really, really slow bit rate (75 or 300 baud) that was common for these types of computers back then didn't require much fidelity. I remember some similar radio show in national Swedish radio a long time ago. It was broadcast very late in the evening in an effort to avoid mass confusion about the strange sounds.