Motorola asked the FCC to reconsider its recent decision setting ...

Like others asking the FCC for reconsideration, Motorola took particular issue with interim deadlines for shifting to more efficient narrowband equipment in 150-174 MHz and 421-512 MHz for private land mobile frequency bands. It asked the FCC to rescind its 2005 and 2008 prohibitions covering the authorization, manufacture and import of multimode equipment that offered backward compatibility with 25 kHz legacy systems and new 12.5 kHz capable equipment. It also asked reconsideration of a near- term prohibition on changes in existing licenses that expanded 25 kHz system footprints. “Such flexibility will not negatively affect or delay the ultimate transition to 12.5 kHz in these frequency bands,” it said. Motorola also suggested the FCC reconsider a decision to no longer exempt non-public safety one-way paging-only channels from the efficiency standards. “Motorola believes that in light of its decision to adopt a mandatory transition to 12.5 kHz technologies, the FCC should reconsider its decision to retain the January 1, 2005, mandate for manufacturers to incorporate a 6.25 kHz mode into new radio designs,” the company said. The issue of the FCC’s continued involvement in the development of 6.25 kHz equipment is teed up in a further notice, Motorola said. The rules also “appear to call into question the option to use ‘equivalent efficiency’ designs that provide 2 voice paths over 12.5 kHz channel widths,” it said. Motorola said the 2-slot, 12.5 kHz equivalent efficiency option should be kept for any 6.25 kHz requirement that would be in place when the proceeding closed.