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.
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.
Can devices or systems with the signal containment and virtual waveguide features as described be considered Class B unintentional radiators under the Part 15 rules?
Yes, we would consider systems, as described in the attached letter, with signal containment and virtual waveguide feature as Class B unintentional radiators under our Part 15 rules and subject to the following conditions:
What is the Commission guidance for the evaluation of Signal Boosters?
FCC Report and Order (FCC 13-21) introduced a new regulatory framework for signal boosters, including the introduction of a Network Protection Standard that specifies the technical and operational requirements necessary to minimize the potential for inter...
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 v02 attached below.
How are new application and permissive change application handled for wideband and narrowband equipment in the Part 90 re-farming bands?
Attached to this publication are two documents: (1) a series of questions and answers 579009 D01 - Q and A on Re-farming Part 90 freq v03r01 and (2) a narrowband policies and procedures document including rules summary table 579009 D03 Applications Part 9...
Recent Guidelines and Interpretations:
Posted on Apr 28 2009 3:02PM:
Updates will be forthcoming.
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.