";s:4:"text";s:2703:"FCC 15-99 Also, wireless microphones have been developed that operate on other frequency bands on an unlicensed basis under the FCC’s Part 15 rules. Strong signal levels, potentially 10 to 100 times more power than unlicensed in the case of a central collector, and low noise levels resulting from the spectrum's FCC protection, combine to dramatically increase the range, throughput and performance of communications. Unlicensed means the operator of the radios does not need to file directly with the FCC to use the radio. Unlicensed Spectrum is actually very similar. In USA, FCC defines regulations for unlicensed bands viz. Unlicensed spectrum users are competing with other users for priority. Definition An unlicensed frequency is a frequency band set aside for devices approved by the FCC. The unlicensed frequency bands are ones in which the FCC allows operation without a license or callsign. The US Federal Communications Commission (FCC) has three primary frequency bands designated for unlicensed operation. The frequencies are effectively managed by the FCC instead of by a license-holder. The ISM bands are part of the frequency spectrum that can be used without a license. The rules were published in the Federal Register of the US Government and will become effective on June 2, 2014. 03/31/2017 [CORRECTED to UPDATE information on effective date: 2017-03-31 @ 1315 UTC] It’s been a long time coming, but the Amateur Service will get two new bands in the near future. Unlicensed Spectrum is a designation of frequencies that do not have exclusive access. In addition, Part 15 of the FCC regulations limits the time-on-air of most unlicensed transmissions to .4 seconds (400 milliseconds). Explore the 400 MHz to 480 MHz wireless spectrum usage by device FCC ID and FCC Rules. The FCC allows some to operate in specified bands without licenses, for example low power baby monitors and garage door openers.