 France instead adopted its own unique, twin-FM-carrier based SECAM system, which offered improved quality at the cost of greater electronic complexity, and was also used by some other countries, notably Russia and its satellite states.Though the color standards are often used as synonyms for the underlying video standard - NTSC for 525i/60, PAL/SECAM for 625i/50 - there are several cases of inversions or other modifications; e.g.PAL color is used on otherwise "NTSC" (that is, 525i/60) broadcasts in Brazil, as well as vice versa elsewhere, along with cases of PAL bandwidth being squeezed to 3.58MHz to fit in the broadcast waveband allocation of NTSC, or NTSC being expanded to take up PAL's 4.43MHz.