Modified building dependancy tree : early radar base.

[Rodmar]

Currently, the minimal radar base is :

Entrance, Power Plant, Command Center, Radar.
(operators are said living in these buildings).

Practically, for base defense reasons, there are "space-holders" like Quarters and Storage.

Whereas the unmanned radar tower costs 10 Kc...

What if, a early radar facility could be achieved with no operators at all, and presumably not all its surface antennas sites.

This minimal radar base would be :

Entrance, Power Plant, Radar.
Ranges : same as the unmanned tower, a fighter, or slightly greater.

Early Radar would depend on Power Plant, not on a fully manned Command Center. Advanced Radar would depend on Command Center.

[H-Hour]

Are you familiar with Installations? When looking at the geoscape, look at the Build Installations button. You can build up to 3 installations per base, so you can place three Radar Towers around the globe to increase your coverage.

[Rodmar]

Yes I know. That would make then for a fourth radar coverage.
I can live without ; it is just that I use to delay the radar building circa 10-15 days, building in the meantime Quarters and Stores to move away from the Entrance, both the Power Plant and the Command Center. Early radar status would last 12 days, until the Command Center is online.