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.

重點:
FCC 16-24主要修訂內容為針對U-NII-3 (5.725~5.85 GHz) 頻帶之out-of-band emission的限制值放寬。
U-NII-3之OOBE有下列兩種選項來選擇測試符合法規要求 :
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
對於U-NII-3之OOBE測試，若採用FCC 15.407(b)(4)(ii)為限制值-同15.247(d)的要求，請務必注意認證申請與市場銷售的過渡時期(請參考下列表格,轉換期的截止日).

Cerpass 認證集團, 能在此議題上協助客戶方案如下:
1. 目前Cerpass是採用FCC 15.407(b)(4)的限制值進行測試驗證,預計May 6, 2016之後就會改採用FCC 15.407(b)(4)(i)放寬對於U-NII-3 (5.725-5.85 GHz)帶外頻段輻射限制值進行測試.
2. 對於目前公司採用FCC 15.407(b)(4)的測試方式,相較於新法規是屬於嚴格的,所以對於新法規實施後,並不會有測試Fail的問題.
 
3. 請注意這FCC-16-24A1並沒有延展定義於15.37(h) & KDB926956 D01 U NII Transition Plan 允許在舊法規認證下銷售市場的時程(2016/06/02),只是修改與放鬆U-NII-3 (5.725-5.85 GHz)帶外頻段輻射限制值
4. 對於正在進行中的案件,請PM詢問客戶是否要使用FCC-16-24A1的方式測試帶外頻段輻射驗證項目
5. 對於未來會開案的案件, ,請PM通知客戶FCC-16-24A1相關變更說明
6. 如果客戶在May 6, 2016之前已經取得認證,想要使用FCC 15.407(b)(4)(i)進行測試,那U-NII-3 (5.725-5.85 GHz)需要重新驗證測試.