![]() Almost everyone who gets started in ham radio at the very least gets a 2m radio, and many go ahead and get “dual band” radios – those that allow you to transmit and receive on both 2 meter and 70cm. The 2m band in ITU (International Telecommunications Union) Region 2, which encompasses North America, runs from 144-148MHz, while the 70cm band runs from 420-450MHz in the US, and 430-450 in Canada. These refer to the wavelength of those frequency ranges, or the distance from peak to peak on the oscillation of the radio “wave.” Basic in Canada, and Technician in the US, have access to all amateur frequencies above 30MHz, but most use falls into these two bands. Most ham radio use in the US and Canada takes place on two bands in the VHF (Very High Frequency) and UHF (Ultra High Frequency) ranges that are referred to as the 2m and 70cm bands. While there are a variety of formats and frequencies available within ham radio to transmit and receive information and voice, today we will focus on shorter range formats that are commonly referred to as “line of sight” communications. This is the first in a two part series in which we will narrow our focus to Amateur Radio, also known as HAM radio. In our primer on radio communications, we began a discussion on how to communicate when telephone service (especially cellular) gets overwhelmed during emergencies or is otherwise unavailable. ![]()
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