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All wireless gadgets compete on limited space in the available spectrum, said Rabaey.
And your Bluetooth devices only work on a fraction of that spectrum, between 2.4 GHz and 2.8 GHz, he said. This means that your headphones compete with most other wireless devices, including Wi-Fi routers, cordless phones and even unusual devices such as microwave ovens and power adapters. manufactured at low prices.
This range of frequencies, as well as a few others, is considered an "unlicensed band," Rabaey said, which means anyone is allowed to air on those airwaves without the permission of the FCC. But there are several other licensed frequencies, he says, which means that they belong to private companies.
"You are not allowed to pass in the AT & T group," Rabaey said. "It's illegal."
But for years, there has been pressure to open more frequencies for public use, FCC spokesman Neil Grace said in an e-mail. "The FCC has worked hard to introduce more unlicensed spectrum into the commercial market," said Grace.
Last month, the FCC decided to make the spectrum above 95 GHz available for unlicensed use, Grace said. And last year, the FCC proposed to change the use of frequencies in the 6 GHz range, in the hope of opening or even sharing a licensed space for public use. This adds to the 5 GHz aperture for commercial use over the last decade.
While Bluetooth does not operate at higher frequencies that require more power, opening these ranges to the public could help reduce traffic overall, Rabaey said. And as wireless technology continues to grow and gain popularity, the FCC may need to do more to keep traffic to manageable levels, he said.
"We are in the cusp period right now," Rabaey said. "If suddenly all your devices become useless because they're overloaded and you're not getting traffic, people are going to be very unhappy."
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