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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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Publication Searches:

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.
Text search:

Advanced KDB Search: Search for publications that meet one or more identified criteria.

Major Guidance Publications: View publications associated with major guidance categories.

KDB Publication Number Search: Search for a specific publication by entering the publication number:
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Publications:

Recent KDB Publications:
Publication NumberQuestionAnswer
449343  The topic previously addressed in this KDB Publication is now covered under KDB Publication 442401. The topic previously addressed in this KDB Publication is now covered under KDB Publication 442401.
442401  What measurement procedures and test site parameters should be used for testing licensed devices for Section 2.1053 radiated field strength, and radiated power (ERP, EIRP) when specified in the applicable licensed service rule? The basic requirements for contents of an equipment authorization application for a licensed-service transmitting device are given in Section 2.1033(c). In particular, Section 2.1033(c)(14) specifies that all applications must contain test data for Sect...
973804  The topic previously addressed in this KDB Publication is now covered under KDB Publication 412172. The topic previously addressed in this KDB Publication is now covered under KDB Publication 412172.
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 rule references 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 immedia...
865664  Is there any additional guidance for SAR measurements that addresses devices operating in the 100 MHz to 6 GHz range and how should RF exposure compliance be reported? Yes, see the attached documents:   865664 D01 SAR measurement 100 MHz to 6 GHz v01r04 describes SAR measurement procedures for devices operating between 100 MHz to 6 GHz.   865664 D02 RF Exposure Reporting v01r01 provides general reporting r...
412172  How do you determine ERP and EIRP Values for a RF Transmitting System? The attached document 412172 D01 Determining ERP and EIRP v01r01 provides methods for determining the Effective Radiated Power (ERP) and Equivalent Isotropically Radiated Power (EIRP) of a RF Transmitting System. Also, see ANSI C63.10-2013, Annex G.
643646  What are the Specific Absorption Rate (SAR) test requirements for occupational push-to-talk (PTT) radios? The attached document below- 643646 D01 SAR Test for PTT Radios v01r02 - provides test reduction guidance for occupational push-to-talk (PTT) radios pending the development and publication of final procedures


Recent Guidelines and Interpretations:

Posted on Apr 28 2009 3:02PM:

Updates will be forthcoming.

Important Notes:


Posted on Aug 20 2015 3:56PM:
The Federal Communications Commission will be performing Information Technology upgrades and improvements from 6 p.m. EDT on Wednesday, September 2, 2015, through the Labor Day weekend. This work should be completed by 8 a.m. EDT on Tuesday, September 8, 2015. The Equipment Authorization (EAS and TCB) and Knowledge Database (KDB) websites will not be available during this time. For more details see FCC Public Notice DA 15-940

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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