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Glossary of audio, video and RF Terms

  • Technical Documents

FM Protection Ratios – ITU Planning Standards for Terrestrial FM Sound Broadcasting

Another Look at Sidelobe-free FM Antennas – Courtesy of Richard J. Fry, CPBE  (.pdf)

Antenna Design – For FM Broadcast  (.pdf, 373k)

Diplex Filter – Information on Tuning (.pdf, 94k)

Extending Tube Life – Courtesy of Eimac

Replacing Passive Components – Iimprove audio quality by Peter J. Stamler

FM Antenna Interbay Spacing – Modifying spacing to solve downward radiation and other problems by Joseph Semak, Tele-Images, San Diego, CA

Conversion vs. Demodulation – In FM STL and translator Systems

IOT – An Old Dream Come True

FM Reception Tips – Courtesy of Winegard Company

RF Filtering – Products for the Broadcast Industry Courtesy EMR Corporation

Installation of RF Power Transistors and Modules – Courtesy of RF Parts Company

  • Engineering Charts and Tables

Approximate Distance to 0.5MV/M (54 DBU) Contour – Courtesy of ERI (Your browser should support ‘tables’ for best results.)

Andrew Heliax Cable Data – Useful Andrew Heliax cable Data (your browser should support tables for best results), if you want to download this table in MS Word format follow this Link.

Average Power Rating – For transmission cable (84k Gif file) Print out for best results.

Stereo Separation – Measuring it with an Oscilloscope

VSWR – Voltage Standing Wave Ratio Relationships (Your browser should support ‘tables’ for best results.)

Bessel Nulls – For Frequency Modulation Systems (Your browser should support ‘tables’ for best results.)

Television Channels – Video and Audio Frequencies for U.S. standard

  • Miscellaneous

“A Short History of Transmission Audio Processing in the United States” – By Robert Orban

Long-distance FM Reception – an explaination