FM and TV Propagation Curves Graphs, Sections 73.333, 73.525, and 73.699

The table below contains graphical implementations of the FM and TV propagation curves graphs contained in Sections 73.333 and 73.699 of the FCC's rules.  We include F(50,90) digital television service graphs, although these are not in the FCC's rules.  Lastly, we provide Figures 1 and 2 from 73.599 of the interference ratio curves from FM noncommercial educational stations to TV Channel 6 stations.

These graphs have been generated in three formats, PDF, PostScript, and as PNG images.  PDF graphs should be used when the image needs resizing from the default 11 inch by 17 inch graph size, for example when printing to standard 8½" by 11" paper.  PDF files are also the quickest to download.  PNG files should be used for graphs viewed on the Internet, in the same manner (within an <IMG > tag) as .jpg or .gif images.  The PostScript version is for use with PostScript-capable printers and is best printed on 11" x 17" paper.  The PostScript version may be viewed using GhostScript and GhostView, or other PostScript viewer.  Each graph has three options for the graphed curves color (black, red, and blue).

The Audio Division maintains an on-line F(50,50), F(50,10), and F(50,90) propagation curves calculator for the F(50,50), F(50,10) and F(50,90) curves.

For more information on AM and FM radio broadcasting, please visit the Audio Division website, and the Broadcast Radio Links page.

FCC > Media Bureau > Audio Division, (202) 418-2700.