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NRSC Revises AM Standards, Adopts New Guideline Documents
Charlotte, NC - Sep 26, 2007 - The National Radio Systems Committee (NRSC) adopted two NRSC Guidelines, adopted two newly revised NRSC Standards and retired an AM radio receiver standard. The NRSC is a technical standards-setting body co-sponsored by the National Association of Broadcasters (NAB) and the Consumer Electronics Association (CEA).
The AM Broadcasting (AMB) Subcommittee adopted the first-ever NRSC Guideline, NRSC-G100, Bandwidth Options for Analog AM Broadcasters. This document is a guideline for broadcasters who desire to operate their AM facilities with audio bandwidths below 10kHz, and offers a thorough explanation of why reduced AM bandwidth may be advantageous. Additionally, the AMB Subcommittee adopted NRSC-1-A, NRSC AM Preemphasis/deemphasis and Broadcast Audio Transmission Bandwidth Specifications, and NRSC-2-A, Emission Limitation for AM Broadcast Transmission. These are revisions to previously adopted NRSC Standards, as a result of the NRSC's periodic Standards review process. NRSC-3, Audio Bandwidth and Distortion Recommendations for AM Broadcast Receivers, was retired because it has not been widely adopted.
NRSC-G200, Harmonization of RDS and IBOC Program Service Data (PSD) Guideline, was adopted by the Digital Radio Broadcasting (DRB) Subcommittee. This Guideline discusses specific text message features of the NRSC's in-band/on-channel (IBOC) digital radio (NRSC-5-A) and RBDS (NRSC-4-A) Standards, and defines an intended usage that will allow broadcasters to send, and receivers to display, common information independent of whether the data signal is being received from IBOC or RBDS.
These documents will be available free-of-charge on the NRSC's website at nrscstandards.org, following a final, procedural review that will take approximately four weeks.
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