tape
╔════════════════════════════════════════╗ ║ A u00f8 · side one · 60 min ║ ║ ┌────────────────────────────────────┐ ║ ║ │ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ │ ║ ║ │ ┌────┐ ████████████████ ┌────┐ │ ║ ║ │ │ ●● │ ████████████████ │ ●● │ │ ║ ║ │ └────┘ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ └────┘ │ ║ ║ └────────────────────────────────────┘ ║ ║ ○ ○ ║ ║ ┌────────────────────────┐ ║ ║ │ ▪ ▪ ○ ○ ▪ ▪ │ ║ ╚═══════╧════════════════════════╧═══════╝
The earliest piece here. A compact cassette in box-drawing characters: double lines for the shell, single lines for the window, blocks for the tape between the hubs. Sixty minutes, side one. The radio mast came two years later. See about for how the pieces are dated.