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Analogue Radios

Since the initial development of wireless communications, analogue has been the primary technology platform for two-way radios. The majority of radio systems today still run in analogue mode. Analogue signals have a sinusoidal, or continuous, value.
Today’s analogue systems use frequency modulation (FM). The frequency modulation produces a continuous wave with the voice signal. By integrating such a simple system into a single chip, the cost of this radio has dramatically reduced. Analogue signals are commonly used in many systems today, but the uses for analogue signals are declining with the introduction of the more reliable digital signal.

Typical features analogue two-way systems include:

• Analogue systems use the natural voice, which is a feature preferred by many users.

• Because analogue has been around longer, the number of products and accessories offered is much larger and provides for more options than does digital.

• Analogue systems make good use of bandwidth and are well understood by the general public.

• Typically, only one two-way conversation can occur at a time on each channel.

• Analogue systems require hardware receivers and transmitters that are designed to fit the particular transmission. Analogue devices can be upgraded with features but not technology.

• No software-driven business applications are available for analogue radios.