United States Government Publishing Office publisher pbl distributor dst United States Commerce Department National Institute of Standards and Technology (NIST) author aut Government Organization Central Radio Propagation Laboratory. author aut text government publication eng GOVPUB Executive Agency Publications executive 2020-07-02 Commerce Department 1963-02-01 monographic deposited born digital 36 digital object pages C 13. https://www.govinfo.gov/app/details/GOVPUB-C13-81319f51de293d713827ee2ffdb7798f P0b002ee1a74f3a4d ocn995168765 (OCoLC)995168765 DGPO 2020-07-02 2026-07-04 GOVPUB-C13-81319f51de293d713827ee2ffdb7798f machine generated eng fdlp C13 GOVPUB-C13-81319f51de293d713827ee2ffdb7798f 81319f51de293d713827ee2ffdb7798f GOVPUB NBS Ionospheric Predictions 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 Ionospheric Predictions were issued monthly by the National Bureau of Standards (NBS) Central Radio Propogation Laboratory (CRPL) as an aid for determining the best sky-wave frequencies over any transmission path, at any time of day, for average conditions for the month. Issued three months in advance, each issue provided tables of numerical coefficients that defined the functions describing the predicted worldwide distribution of foF2 and M(3000)F2 and maps for each even hour of Universal Time of MUF(Aero)F2 and MUF(4000)F2. National Institute of Standards and Technology Commerce Department. National Institute of Standards and Technology. 1963 1963-02-01 https://www.govinfo.gov/app/details/GOVPUB-C13-81319f51de293d713827ee2ffdb7798f https://www.govinfo.gov/content/pkg/GOVPUB-C13-81319f51de293d713827ee2ffdb7798f/pdf/GOVPUB-C13-81319f51de293d713827ee2ffdb7798f.pdf Central Radio Propagation Laboratory creator Central Radio Propagation Laboratory. National Institute of Standards and Technology (U.S.) Central Radio Propagation Laboratory. mdu U.S. Dept. of Commerce, National Institute of Standards and Technology 1963-02-01. monographic 1 online resource : text technical report eng Central Radio Propagation Laboratory. February 1, 1963. 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.IP.2