United States Government Publishing Office publisher pbl distributor dst United States Commerce Department National Institute of Standards and Technology (NIST) author aut Government Organization Interservice Radio Propagation Laboratory. author aut text government publication eng GOVPUB Executive Agency Publications executive 2020-07-06 Commerce Department 1952-03-01 monographic deposited born digital 16 digital object pages C 13. https://www.govinfo.gov/app/details/GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca P0b002ee1a753600b ocn995169117 (OCoLC)995169117 DGPO 2020-07-06 2026-07-04 GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca machine generated eng fdlp C13 GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca 8bbfde2a78af30beba9f9305cfb972ca GOVPUB NBS Basic Radio Propagation Predictions CRPL Series D NOTE: THE “DATE ISSUED” ABOVE MAY DEFAULT TO JANUARY 1ST OF A GIVEN YEAR. TO THE VIEW THE MOST ACCURATE DATE OF ISSUE, REVIEW THE TITLE PAGE OF THE PUBLICATION. The NBS Basic Radio Propagation Predictions CRPL Series D was a monthly series originally prepared by the Interservice Radio Propagation Laboratory (IRPL) during World War II. The IRPL was set up by the United States Joint Communications Board at the National Bureau of Standards (NBS). This series was preceded by the IRPL Radio Propagation Conditions, and was initially restricted and available only to the military as a basic supplement to the IRPL's Radio Propagation Handbook, which was issued by the military. Predictions were made three months in advance. On May 1, 1946, the wartime IRPL ceased to exist, and its duties and functions were assumed by the Central Radio Propagation Laboratory (CRPL) of NBS. In July 1946 the series was made available by annual subscription to those concerned with radio communication in determining the best sky-wave frequencies over any path at any time of day for average conditions. In September 1947 various maps, charts, diagrams, and nomograms needed to make practical application of the world-contour charts were added to the series, along with examples of their use. National Institute of Standards and Technology Commerce Department. National Institute of Standards and Technology. 1952 1952-03-01 https://www.govinfo.gov/app/details/GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca https://www.govinfo.gov/content/pkg/GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca/pdf/GOVPUB-C13-8bbfde2a78af30beba9f9305cfb972ca.pdf Three Months in Advance Interservice Radio Propagation Laboratory creator Interservice Radio Propagation Laboratory. National Institute of Standards and Technology (U.S.) Interservice Radio Propagation Laboratory. mdu U.S. Dept. of Commerce, National Institute of Standards and Technology 1952-03-01. monographic 1 online resource : text technical report eng Interservice Radio Propagation Laboratory. March 1, 1952. Title from PDF title page (viewed July 6, 2017). Includes bibliographical references. Mode of access: World Wide Web. Systems requirements: Adobe Acrobat PDF reader. https://doi.org/10.6028/NBS.BRPD-CRPL-D.91 three months in advance three months in advance