US published a modular transmitter integration guide

December 25, 2019

The FCC released a Modular Transmitter Integration Guide— Guidance for Host Product Manufacturers and  will serve as a guide to help simplify the concept of certification for manufacturers of host devices with modular transmitters.

Testing of the host product with all the transmitters installed is recommended to verify that the host
product meets all the applicable FCC rules. The radio spectrum is to be investigated with all the
transmitters in the final host product functioning to determine that no emissions exceed the highest limit
permitted for anyone individual transmitter as required by Section 2.947(f).

A formal application for certification submission containing the results of this investigation is not required. The host manufacturer is responsible to ensure that when their product operates as intended it does not have any emissions present that are out of compliance that was not present when the transmitters were tested individually.

For host products with the certified modular transmitter, the frequency range of investigation of the
composite system is specified by a rule in Sections 15.33(a)(1) through (a)(3), or the range applicable to the digital device, as shown in Section 15.33(b)(1), whichever is the higher frequency range of investigation.

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