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The best tech products announced this week include KEF's first Dolby Atmos soundbar and $70,000 wireless loudspeakers.

DAB tuning information To listen to DAB radio, you need to tune to the correct frequency to receive the service you want, just as you do with AM or FM.

FAQ What is RFID? RFID stands for radio frequency identification, and it allows certain devices to read information simply by bringing them within range of a bar code or chip on a product.

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Additionally, the 2.4GHz Wi-Fi band has to compete with other devices in the home that use the same frequency, such as microwave ovens, Bluetooth gear, and wireless phones.