Government agencies divide the radio frequency spectrum into frequency bands that are authorized for specific uses defined geographic regions (such as a city). In the United States, the responsibility ...

and as a result they can also be used for things like this incredibly accurate frequency reference. This project is what’s known as a GPSDO, or GPS-disciplined oscillator. Typically they use a ...

GSM radio systems operate in a specific frequency band (or frequency bands) that has been allocated to the system. The radio frequency channel that the system operators may be reused at different cell ...

This review introduces the innovative application of radio frequency (RF) treatment in fluid and semifluid foods, and it is ...

BBC Radio broadcasts throughout the UK on analogue, DAB digital Radio, digital television and online. Our stations available on analogue are listed below with the frequencies where you can find them.

which is ham-speak for radio frequency interference caused by man-made sources. Indiscriminate, often broadband in nature, and annoying as hell, QRM spews forth from all kinds of sources ...