A Survey of the Techniques for Measuring the Radio Refractive Index
A Survey of the Techniques for Measuring the Radio Refractive Index

Author: R. E. McGavin

Publisher:

Published: 1962

Total Pages: 48

ISBN-13:

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The radio refractive index can be measured either directly or indirectly. The former method is utilized by radio frequency refractometers; the latter method involves measurement of temperature, pressure and humidity and conversion to refractive index. In terms of convenience and accuracy the direct method is superior; however, lack of the universal use of refractometers requires the use of weather service type of data for the bulk of refractive index structures. Meteorological sensing is limited mainly by the inaccuracy in measuring humidity which under ideal conditions appears to limit the accuracy to 1.0 N. Gradient measurements utilizing radiosondes reflects an accuracy no better than £ 3 N units. Radio frequency refractometers are capable of accuracies as much as an order of magnitude better than that achieved by meteorological sensors. Lightweight refractometers have been devised for balloon-borne and dropsonde measurements reflecting accuracies inferior to the conventional refractometer but superior to the radiosonde.

Billboard
Billboard

Author:

Publisher:

Published: 1944-05-13

Total Pages: 80

ISBN-13:

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In its 114th year, Billboard remains the world's premier weekly music publication and a diverse digital, events, brand, content and data licensing platform. Billboard publishes the most trusted charts and offers unrivaled reporting about the latest music, video, gaming, media, digital and mobile entertainment issues and trends.

Sold on Radio
Sold on Radio

Author: Jim Cox

Publisher: McFarland

Published: 2008-09-18

Total Pages: 333

ISBN-13: 0786451769

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How was it that America would fund its nascent national radio services? Government control and a subscription-like model were both considered! Soon an advertising system emerged, leading radio into its golden age from the 1920s to the early 1960s. This work, divided into two parts, studies the commercialization of network radio during its golden age. The first part covers the general history of radio advertising. The second examines major radio advertisers of the period, with profiles of 24 companies who maintained a strong presence on the airwaves. Appendices provide information on 100 additional advertisers, unusual advertisement formats, and a glossary. The book has notes and a bibliography and is fully indexed.

The Concise Encyclopedia of American Radio
The Concise Encyclopedia of American Radio

Author: Christopher H. Sterling

Publisher: Routledge

Published: 2010-04-12

Total Pages: 2383

ISBN-13: 1135176833

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The average American listens to the radio three hours a day. In light of recent technological developments such as internet radio, some argue that the medium is facing a crisis, while others claim we are at the dawn of a new radio revolution. The Concise Encyclopedia of American Radio is an essential single-volume reference guide to this vital and evolving medium. It brings together the best and most important entries from the three-volume Museum of Broadcast Communications Encyclopedia of Radio, edited by Christopher Sterling. Comprised of more than 300 entries spanning the invention of radio to the Internet, The Concise Encyclopedia of American Radio addresses personalities, music genres, regulations, technology, programming and stations, the "golden age" of radio and other topics relating to radio broadcasting throughout its history. The entries are updated throughout and the volume includes nine new entries on topics ranging from podcasting to the decline of radio. The Concise Encyclopedia of American Radio include suggestions for further reading as complements to most of the articles, biographical details for all person-entries, production credits for programs, and a comprehensive index.