ü 模塊有下面幾種形式：
? 獨立式射頻模塊 (Single-modular transmitter）是指包含完整的射頻發射電路的產品，其功能僅僅缺少輸入信號和供電電源。這個模塊可被安裝于其它設備中，如筆記本電腦、DC播放器或DVD等產品 。
? 分離式射頻模塊(Split-modular transmitter）指必須包含射(高)頻端無線電發射電路，以及在控制元件和無線電發射機前端進行控制信息和其它數據交換的電路。
? 限制性獨立式射頻模塊(Limited single-modular transmitter）指不能完全符合獨立式射頻模塊要求的射頻模塊。
? 限制性分離式射頻模塊（Limited split-modular transmitter）指不能完全符合分離式射頻模塊要求的射頻模塊。
? 獨立式射頻模塊 (Single-modular transmitter）的界定條件 (part 15.212)
1）RF shielding.
The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly;
射頻模塊的無線電發射電路必須有自身的屏蔽罩，晶體振蕩器和調諧電也可以放置在無線電發射電路屏蔽罩外,但必須在一個模組上。
2）Buffered data input/output ports
The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal;
射頻模塊需含有緩沖調制和數據輸入電路以確保射頻模塊能滿足Part 15 法規要求的各種類型的輸入信號。
3） Power supply regulation
The module must contain power supply regulation on the module;
在射頻模塊上必須包含模塊自己的電源、(電壓)控制電路。
4） Permanent antenna or unique connector
The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b);
射頻模塊必須包含一個永久和這個模塊使用的天線，或者包含一個特殊要求的天線連接口，和在市場上銷售和運轉僅僅和這個特定的天線在一起，按照章節15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b);要求。
5）Testes in “stand alone” condition
The module must demonstrate compliance in a stand-alone configuration; i.e. , the module must not be inside another device during testing for compliance with part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see § 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available
射頻模塊測試需在單機的結構下進行測量，也就是說，在進行Part 15 測試時，射頻模塊不允許放在其它設備內測試。除非射頻模塊使用電池供電，模塊符合章節15.207 關于交流傳導電源騷擾的要求。連接模塊的交流或直流電源線和數據輸入線不能含有磁環，除非它是可以在市場上直接銷售的產品。這些線的長度應選用實際使用的長度，如果長度未定義，應選用最小10 cm 以確保在模塊與支持系統無任何藕合的線，模塊在測試期間所連接的任何附件、周邊或支持系統必須是市場流通且無任何修改的產品.
6） Labeled with own ID number
The module must be labelled with its permanently affixed FCC ID label, or use an electronic display
模塊必須有它永久固定的FCC ID標簽，或者使用一個電子顯示標簽。
– If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: YZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The host OEM user manual must also contain clear instructions on how end users can find and/or access the module and the FCC ID.
如果利用的是永久固定式標簽，射頻模塊必須有自己的FCC ID 號碼，并且如果當模塊放置到其他產品中時標簽不可見，則其產品外部需顯示所涵蓋模塊的相關標簽， 外部標簽的描述例如: “Contains Transmitter Module FCC ID: XYZMODELl”或“Contains FCC ID: XYZMODEL1，也可以使用任何能表達類似內容的描述。注: XYZMODELl 僅僅是表示一個申請的FCCID 號碼。同時在主機產品的說明書上必須包括清晰的說明怎樣讓最終使用者發現或訪問這個模塊和FCC ID。
7）Instructions to operator / OEM integrator
The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee;
射頻模塊必須滿足申請射頻產品的所有法規要求，包括通過申請方在綜合的說明里提供申請發射模塊的所有情況。
8） Must meet RF Exposure requirements.
The modular transmitter must comply with any applicable RF exposure requirements in its final configuration.
射頻模塊必須滿足任何射頻暴露要求，而且獨立式射頻模塊一律被視為距離人體大于20 cm 的設備(mobile device)。
