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146.520 MHz (146520 KHz) can be defined as the Amateur Radio 2m band FM mode simplex calling frequency.

"52" as it is affectionately known is also referred to as a "National Calling Frequency", however this designation is not cast in law. The Radio Act and regulations set out by Industry Canada govern Amateur Radio in Canada, however there are no special measures required on this frequency.

In many locations where there is no significant radio traffic (high volume of communications between radio operators), 146.52 MHz is used as a general discussion frequency. Radio operators which use this frequency for general conversation provide a benefit to travellers coming into an area. These mobile Amateur Radio operators/stations that have Amateur Radio equipment in their vehicles can obtain valuable travel directions or other important information.

The 2 Meter allocation is a popular Amateur Radio band. It is so named because the wavelength of the radio waves is very close to 2 meters in length. It ranges in frequency from 144 to 148 MHz in Canada and Australia, and from 144 to 146 MHz in most other parts of the world. The 2-meter band is part of the VHF spectrum, and is primarily used for local communications, within a range of about 60 Kilometers.

The National FM Calling Frequency (146.52) is not an international designation, for instance in the United Kingdom, 145.500 MHz V40 (S20) is used as the National FM Calling Frequency.

For more information about Amateur Radio visit: http://www.rac.ca (Radio Amateurs of Canada)

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