After the FCC's "Sixth Report and Order" ended the license freeze and opened the UHF band in 1952, it devised a plan for allocating VHF licenses. Under this plan, almost all of the country would be able to receive two commercial VHF channels plus one non-commercial channel. Most of the rest of the country ("1/2") would be able to receive a third VHF channel. Other areas would be designated as "UHF islands" since they were too close to larger cities for VHF service. The "2" networks became CBS and NBC, "+1" represented non-commercial educational stations, and "1/2" became ABC (which was the weakest network usually winding up with the UHF allocation where no VHF was available).