NAFB North Range

Operating as part of the North Range of the NAFR (Nellis Air Force Range). three Electronic Combat  (EC) ranges provide a user selectable, low-to-high electronic combat threat environment.  These EC ranges are:

TTR (Tonopah Test Range)
TPECR (Tolicha Peak Electronic Combat Range)
EC South
Site Four
Basecamp Airfield

The North Range contains four unmanned weapons delivery areas in addition to the TECR, the TPECR and EC South.  All four subranges consist mainly of tactical-type targets representing airfields, SAM sites, truck convoys, missle storage sites, artillery companies, and other targets.  The type of weapons authorized for delivery depends upon the target selected.

Sources:
    http://www.serve.com/mahood/nellis/nthrange.htm