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Publication Number: 558074 Rule Parts: 15.247 Publication Date: 04/08/2016
Keyword: 15.247, Digital Transmission Systems, DTS, DTS Measurements and Procedures

First Category: Unlicensed Service Rules and Procedures
Second Category: Digital & Freq Hopping Devices 15.247

Question:   What are the test procedures for measuring Digital Transmission System (DTS) devices subject to the requirements in Section 15.247?


Attachment 558074 D01 DTS Meas Guidance below provides guidance for performing compliance measurements on Digital Transmission Systems (DTS) operating under Section 15.247.

The Commission revised the rules for DTS devices operating in the 5725-5850 MHz band operating under Section 15.247 rules (FCC 14-30).  Effective June 2, 2014, DTS devices operating in this band must comply with the new rules under Part 15 Subpart E (New Rules).

The Commission established a transition period to allow devices to be approved under the Old 15.247 Rules provided below in attachment 558074 D02 Part 15.247 Old Rules.  Applications for new devices or for already approved devices to add operation in the 5725-5850 MHz band have the following options:

  • Comply with the Old 15.247 Rules until  March 2, 2016 and continue to use the guidance in attachment 558074 D01 DTS Meas Guidance; or
  • Comply with the New Rules using guidance provided in KDB Publication 789033 for devices subject to the New Rules.

Also, permissive changes to already approved devices under the Old 15.247 Rules for 5725-5850 MHz band devices can be made under the same rules until June 1, 2016.  Starting June 2, 2016, permissive changes will not be permitted for such devices unless they meet the requirements of the New Rules and the guidance provided in KDB Publication 789033.


For further information on permissive changes and marketing restrictions on devices approved under the Old Rules see KDB Publication 926956.


Attachment List:

558074 D01 DTS Meas Guidance v03r05
558074 D02 DTS Part 15.247 Old Rule


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