Wireless communication before cellular technology
The Marconi system made a radio link between systems, which was the size of a building. Eventually, people put up a radio system at a high point in the city, then those with the right kind of radio could talk to the high point.
In essence, there was only one cell, even though it wasn't cellular in any sense. But the amount of data you could send depended on how far away you were. The desire was for these cells to get closer together, leading to the invention of the cellular system.
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