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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:
Publication Number:

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Publications:

Recent KDB Publications:
Publication NumberQuestionAnswer
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 Pre-Approval Guidance (PAG) procedures (Section 2.964) formerly known as the Permit But Ask (PBA) procedure. Attachment 388624 D02 Pre-Approval Guidance List v17r02 provides a list of the RF devices ...
384352  If a proposed system has a signal with a bandwidth from 4 to 22 MHz, the midband frequency of 13 MHz., corresponding to the wavelength of 23.06 meters and the wavelength for the lowest frequency is 4 MHz (wavelength of 74.95 meters), how far out should the measurements go along the line, given these potential measurement points down the line: Wavelength, midband:0, 1/4,  1/2,  3/4,  1,  1&1/2, 2  And Distance Down Power Line (m) : 0 5.765, 11.531, 17.296, 23.06, 34.592, 46.123.  If the 2-wavelength point for the midband frequency exceeds the half-wavelength of the lowest frequency (which would be 37.475 meters), should the 2 wavelength measurement point be included? Appendix C (Measurement Guidelines for Broadband Over Power Line (BPL) Devices Or Carrier Current Systems (CCS) and Certification Requirements For Access BPL Devices) of Report and Order FCC 04-245 (https://docs.fcc.gov/public/attachments/FCC-04-245A1.pdf...


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.

Stay updated on newly published guidance and frequently asked questions by adding this RSS feed to your reader.

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