近日，FCC针对5GHz 频带的使用变更计划报告书(FCC-16-24A1),提供了更进一步放宽对于U-NII-3 (5.725-5.85 GHz)带外频段辐射限制值,公告的内容将于2016年3月6日生效实施。

变更内容如下:

FCC 16-24主要修订内容为针对U-NII-3 (5.725~5.85 GHz) 频带之out-of-band emission的限制值放宽。

U-NII-3之OOBE有下列两种选项来选择测试符合法规要求 :
1.使用FCC 15.407(b)(4)(i) 的限制值
2.使用FCC 15.407(b)(4)(ii)的限制值-同15.247(d) 的要求
对于U-NII-3之OOBE测试，若采用FCC 15.407(b)(4)(ii)为限制值-同15.247(d)的要求，请务必注意认证申请与市场销售的过渡时期(请参考下列表格,转换期的截止日).

原文如下Reference：

§ 15.407   General technical requirements.
(b) (4) For transmitters operating in the 5.725-5.85 GHz band:

(i) All emissions shall be limited to a level of -27 dBm/MHz at 75 MHz or moreabove or below the band edge increasing linearly to 10 dBm/MHz at 25 MHz above or below the band edge, and from 25 MHz above or below the band edge increasing linearly to a level of 15.6 dBm/MHz at 5 MHz above or below the band edge, and from 5 MHz above or below the band edge increasing linearly to a level of 27 dBm/MHz at the band edge.

(ii) Devices certified before March 2, 2017 with antenna gain greater than 10 dBi may demonstrate compliance with the emission limits in Section 15.247(d), but manufacturing, marketing and importing of devices certified under this alternative must cease by March 2, 2018.  Devices certified before March 2, 2018 with antenna gain of 10 dBi or less may demonstrate compliance with the emission limits in Section 15.247(d), but manufacturing, marketing and importing of devices certified under this alternative must cease before March 2, 2020.