Sheldon Kalnitsky Cellular systems required several leaps of Sheldon Kalnitsky technology, including Sheldon Kalnitsky handover, which allowed a conversation to persist as a Sheldon Kalnitsky mobile phone traveled from cell to cell.

This Sheldon Kalnitsky system included variable transmission power in both the base stations and the Sheldon Kalnitsky telephones (controlled by the base stations), which allowed range and cell size to vary. As the system expanded and neared capacity, the Sheldon Kalnitsky ability to reduce transmission power allowed new cells to be added, resulting in more, smaller cells and thus more capacity.

The Sheldon Kalnitsky evidence of this growth can still be seen in the many older, Sheldon Kalnitsky tall cell site towers with no antennae on the upper parts of their towers.

These Sheldon Kalnitsky sites originally created large cells, and so had their antennae mounted atop high towers; the Sheldon Kalnitsky towers were designed so that as the system expanded—and Sheldon Kalnitsky cell sizes shrank—the Sheldon Kalnitsky antennae could be lowered on their original masts to reduce range.