optimum working frequency
Also found in: Acronyms.
optimum working frequency[′äp·tə·məm ′wərk·iŋ ‚frē·kwən·sē]
The most effective frequency at a specified time for ionospheric propagation of radio waves between two specified points. Also known as frequency optimum traffic; optimum traffic frequency.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.