However, any frequencies lower than 27 MHz are prohibitive for most products because of the large antenna size required. It shows unlicensed bands that are available at both low and high frequencies. Table 1 below lists some of the more common unlicensed frequency bands. Unlicensed transmission devices, which include most new products, must use one of the following frequency bands in the U.S.: No operator’s license is required for receiver-only products, like a radio, or GPS. Transmitting on many of the available frequencies requires the device’s operator to have a special FCC license similar to radio stations, TV stations, and HAM operators. Multiple radio frequencies are allowed around the world, and each country has its own set of rules. Choosing the frequency gets really complicated if you plan to sell your product in multiple countries, and especially if sold worldwide. The choice of frequency can have a huge impact not only on performance, but also on your ability to sell your product outside of your own country or region. Get your FREE Ultimate Guide - How to Develop and Prototype a New Electronic Hardware Product in 2023 Granted an electrical engineer will be needed for this process, but any entrepreneur or startup developing a wireless product should also understand the process at a high level. This is the frequency of the signal that is used to “carry” the data from one device to another. This priority one decision that you must make as early as possible is the selection of the carrier frequency. This decision not only affects technical specifications like transmission range, battery life, signal quality and product size, but it also dictates where you can even sell the product. When developing a new wireless product there is one decision that matters most. Developing a New Wireless Hardware Product? Here’s Your Most Important Decision
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