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Office of Engineering and Technology Laboratory Division Knowledge Database (KDB)

Welcome to the OET Laboratory Division Knowledge Database (KDB). The FCC Office of Engineering and Technology (OET) publishes equipment authorization procedures and measurement guidance in the form of FCC Public Notices and Knowledge Database (KDB) publications. The staff guidance provided in the KDB is intended to assist the public in following Commission requirements and does not constitute rules. Accordingly, the guidance is not binding on the Commission and will not prevent the Commission from making a different decision in any matter that comes to its attention for resolution.

The Basic KDB Search is a full text search and the Advanced KDB Search allows for input of multiple search criteria. The KDB Publication Number search is a quick search for a specific publication. We hope that your visit is both timely and useful.

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Basic KDB Search: Enter a text string in the field below. This search scans the Knowledge Database for any publications that include the text entered. Alternative search results can be obtained by using the syntax described by clicking here.
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Advanced KDB Search: Search for publications that meet one or more identified criteria.

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Publications:

Recent KDB Publications:
Publication NumberQuestionAnswer
610077  What are the post market surveillance requirements for a Telecommunications Certification Body (TCB)? Section 2.962(g) of the FCC Rules requires a TCB conduct appropriate post market surveillance activities in accordance with ISO/IEC 17065. The requirements for TCBs were specified in the Commission's Report and Order (R&O) in GEN Docket 98-68 (FCC 9...
388624  What devices require FCC guidance prior to a TCB issuing a grant of equipment authorization, and what are the procedures to obtain this guidance? The attached documents provide guidance on the FCC Pre-Approval Guidance (PAG) procedure formerly known as the Permit But Ask (PBA) procedure. Attachment 388624 D02 Pre-Approval Guidance List v16 provides the current list of devices that are subject to th...
974614  What guidance does the FCC provide to accredited testing laboratories that are recognized by the FCC to test products subject to Declaration of Conformity (DoC) and Certification procedures? The FCC provides guidance to accredited testing laboratories and an overview in the Accredited Testing Laboratory Program Roles and Responsibilities document: 974614 D01 Accredited Test Lab Roles and Resp v03 attached below.  
200443  What measurement procedures should be used for determining compliance of millimeter wave devices? Clause 9 of ANSI C63.10-2013 provides procedures for performing compliance measurements on millimeter wave devices operating under Sections 15.253, 15.255 and 15.257 and 90.103. Note that Sections 15.255 and 15.257 require that the fundamental emission ...
470998  What measurement procedures should be used for compliance testing of a FM transmitter operating under Section 15.239 and designed to use a vehicle's wiring as a transmitting antenna? ANSI C63.10-2013, clause 8 provides measurement procedures for FM transmitters designed for use in a vehicle. The standard addresses three different scenarios: (1) Wireless transmission between the FM sources and the vehicle antenna (8.2); (2) Injecti...
460108  May a monopole (rod) antenna be used for performing radiated emission measurements below 30 MHz? It is not acceptable to use a monopole (rod) antenna when performing measurements to demonstrate compliance with the FCC radiated emissions limits below 30 MHz. The reference regarding a monopole antenna in ANSI C63.4-2014 is excluded per Section 15.31. T...
373026  The topic previously addressed in this KDB Publication is no longer applicable and has been removed from the published list. The topic previously addressed in this KDB Publication is no longer applicable and has been removed from the published list.
368196  What are the Equipment Under Test (EUT) configuration requirements for emission testing of devices with cables, which are absent during normal operation and are connected only temporarily (for maintenance, initial installation, preprogramming, repair, adjustment etc.)? See the procedures in ANSI Standard C63.4-2014 for arrangement of the EUT. Cables that are used only temporarily for maintenance, repair, adjustment, etc. need not be connected to the EUT during compliance testing. Cables that are used during normal ope...
628591  What equipment cannot be certified by a Telecommunications Certification Body? On December 17, 2014 the Commission adopted a Report and Order (FCC 14-208), which was released on December 30, 2014, as part of an ongoing review and update of the Commission's radiofrequency (RF) equipment authorization program. As part of this review t...
357746  The topic previously addressed in this KDB Publication is now covered under KDB Publication 974614. The topic previously addressed in this KDB Publication is now covered under KDB Publication 974614
161357  What marketing conditions apply when a Telecommunications Certification Body (TCB) grant is dismissed? A device may be marketed immediately after a grant is issued. However, when the FCC or the authorizing TCB audits a TCB issued grant of authorization and finds conditions of non-compliance with FCC Rules, a grant less than 30 days old may be set aside and...
300643  What measurement procedures should be used for Part 15 intentional and unintentional radiators compliance testing? The Equipment Authorization Report and Order (FCC 14-208) has updated reference to the measurement procedures for unintentional radiators (ANSI C63.4-2014) and intentional radiators (ANSI C63.10-2013). These new standards may be used effective immediately...
920091  The topic previously addressed in this KDB Publication is now covered under KDB Publication 641163. The topic previously addressed in this KDB Publication is now covered under KDB Publication 641163.
746324  Is a product with a CE Mark or tested to the CISPR 22 standard considered to be compliant with the FCC rules for an unintentional radiator? See attached 746324 D01 Alternative CISPR 22 Limit.
349827  What are the qualifications for a test laboratory used to perform measurements in support of equipment subject to Verification, Declaration of Conformity and Certification procedures? Certification Sections 2.948 (a) and (e) require that equipment authorized under the Certification procedure be tested at an ISO/IEC 17025 accredited test laboratory that is recognized by the FCC to test equipment for the scope of the equipment being ...
822428  What procedure should be used to calibrate antennas used to make radiated emission measurements and normalized site attenuation (NSA) measurements? See ANSI C63.4-2014, clause 4.5 and ANSI C63.10-2013, clause 4.3 for guidance on the types of measurement antennas for use in making radiated emission measurements. ANSI C63.4-2014, tables 1, 2, and 3 provide a summary of the types of antennas that may be...
704992  What are the site validation requirements for a radiated emission test site used to make measurements above 1 GHz? The site validation requirements for radiated emissions compliance testing of unintentional (ANSI C63.4-2014) and intentional radiators (ANSI C63.10-2013) on an open area test site (OATS) (or alternative test site) are specified in Section 2.948(d). In ge...
546630  Can a Telecommunication Certification Body (TCB) supersede attachments to a Form 731 application that has been uploaded to the Federal Communications Commission (FCC) equipment authorization electronic filing system? The FCC procedures allow TCBs to supersede attachments to applications for a Grant of Certification (Grant). Attachment 546630 D01 TCB Supersede Procedures v02 provides the procedures for a TCB to supersede Form 731 attachments.
905462  What test guidance should be followed to demonstrate compliance for U-NII devices subject to DFS requirements? See attachment 905462 D07 Overview UNII Rules v01 for an overview of the test guidance for U-NII devices subject to the DFS requirements.
558074  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...
848637  What additional Form 731 filing information is required for a U-NII Client device without radar detection capability operating in the 5.25 - 5.35 GHz and 5.45 - 5.725 GHz bands to be approved under the Part 15 E rules in effect prior to June 2, 2014? Effective June 2, 2015, the attachment below 848637 D01 DFS Client Devices can only be used for permissive change applications for already approved U-NII client devices without radar detection capability operating in the 5.25 - 5.35 GHz and 5.45&nb...
443999  What are the Commission's plans to approve U-NII devices operating in the 5470 - 5725 MHz band with radar detection and DFS capabilities? The procedures to approve UNII devices operating in the 5470 - 5725 MHz band with radar detection and DFS capabilities under the rules prior to June 2, 2014 (old rules) are contained in the attachment 443999 D01 Approval of DFS UNII Devicesv01r04  be...
789033  What are the test procedures for measuring U-NII devices subject to the requirements in Section 15, Subpart E? The Commission revised the rules for U-NII devices operating under Part 15 Subpart E New Rules[1] which have an effective date of June 2, 2014. A transition period has been provided to allow for certain devices to continue to be approved under the Old Ru...
248227  Are there any SAR measurement procedures for IEEE 802.11 wireless transmitters? See the attached document, 248227 D01 802 11 Wi-Fi SAR, for guidance on performing SAR measurements for devices incorporating IEEE 802.11 wireless transmitters.
935210  What is the Commission guidance for the evaluation of Signal Boosters? FCC Report and Order (FCC 13-21 and rules modified per Order FCC-14-138) introduced a new regulatory framework for signal boosters, including the introduction of a Network Protection Standard that specifies the technical and operational requirements neces...


Recent Guidelines and Interpretations:

Posted on Apr 28 2009 3:02PM:

Updates will be forthcoming.

Important Notes:


Inquiry Responses and Publications: FCC staff publications and replies to inquiries from the KDB are based on one or more of the following criteria:

1. Responses that the FCC staff have given to prior inquiries.
2. Staff guidance of the Commission's rules and policies.
3. Prior staff practices

The KDB publications regarding measurement procedures constitute staff guidance only and do not necessarily represent the only acceptable methods for measuring RF emissions. Nor are these guidelines binding on the Commission or any interested party.

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