Use of amplitude compandored SSB in the mobile radio bands

In response to the pressing concern over growing demand for scarce UHF spectrum, the Federal Communications Commission established the UHF Task Force to determine whether the existing mobile radio bands could be used more effectively in order to allow more traffic in the existing bands. This study revealed that up to 5 times more channels could be created in existing mobile radio bands, using technology that is available today. In particular, this technology uses the amplitude modulated, single sideband mode of emission (A3A) in conjunction with specialized circuits. The specialized circuits improved the techniques' compatibility with mobile use. The research program is summarized and discussions of comparative performance of frequency modulation (FM) and amplitude compandored single sideband (ACSB) radios are included.