The higher...The fewer...

The author argues that a deliberate attempt should be made in system design to restrict the coverage of each system to the required area only. This can be done by limitation of transmitter power, limitation of receiver sensitivity, and avoidance of high locations where possible. This would enable more users to talk on each channel in a given geographical area, thus making more efficient use of a radio spectrum which will always be overcrowded. One advantage of VHF is the limited area a base station can cover; escalation of ERP defeats this advantage.