What frequency is unlicensed?

The US Federal Communications Commission (FCC) has three primary frequency bands designated for unlicensed operation. Unlicensed means the operator of the radios does not need to file directly with the FCC to use the radio. The three frequency bands used for this in the U.S. are the 900 MHz, 2.4 GHz and 5.8 GHz.

What are the unlicensed frequency bands in UK?

Licence-exempt bands for wireless microphones and monitors.

• VHF: Band: 173.7 – 175.1 MHz. Available frequencies: 173.800, 174.000, 174.200, 174.400, 174.600, 174.800, 175.000 MHz.
• UHF: Band: 863.0 – 865.0 MHz. Available frequencies: From 863.100 MHz to 864.900 MHz. No.
• WiFi: Band: 2400 – 2483.5MHz. No.

What operates at 900MHz?

The 900 MHz band (896-901/935-940 MHz) encompasses 10 MHz of spectrum that is used by many utilities, refiners, railroads and other critical infrastructure operators in the United States, primarily for two-way voice communications.

Can I use 915mhz in UK?

we have decided, in light of our statutory duties, that the bands 870-876 MHz and 915-921 MHz will be made available on a licence exempt basis subject to the CEPT’s harmonised technical measures so long as those include sufficient technical constraints to permit the efficient use of the spectrum.

What are license exempt bands?

Licence exempt frequency bands are those that can be used by certain applications without the need for prior authorisation or an individual right of use. This does not mean that they are not subject to regulation – use must still comply with pre-defined technical rules to minimise the risk of interference.

What is license free bands?

Indoor use of low power wireless equipments in the frequency band 2.4GHz to 2.4835GHz.

What is the difference between licensed and unlicensed bands?

The big difference between licensed and unlicensed bands is that the licensed bands are allowed to be used only by the company that licensed them, whereas the unlicensed bands are used by anyone who wants to use them.”

What is the difference between 900MHz and 1800mhz?

It has been proven that 900 Mhz band has 30-40 per cent better coverage than 1800 Mhz band. To make up for this, mobile companies on 1800 Mhz have to invest more in setting up larger number of base stations to achieve the same coverage as in the 900 Mhz band.

What is 900MHz band?

Overview. 3GPP Band 8 (900 MHz) is used globally for 2G GSM voice and basic data mobile communications. Technology-neutral licensing enabled 900 MHz to become a mainstream spectrum choice for mobile broadband using 3G HSPA / HSPA+ / DC-HSPA+, particularly due to the limited bandwidth required by previous 2G GSM systems …

What is the 868MHz band?

Basically, the 868Mhz band is going, from 865MHz to 870MHz and split in 6 different sub-bands where different rules applies. The rules are based on 2 restrictions:

Why did the Commission reconfigure the 800 MHz band?

To address a growing problem of harmful interference to 800 MHz public safety communication systems caused by high-density commercial wireless systems, the Commission in July 2004 adopted a comprehensive plan to reconfigure the band.

What is the duty cycle of the 868-7 subband?

The 868,7 to 869,2 sub-band is a 25mW area but the duty cycle is 0.1%, this zone can be interesting to communicate when an object is emitting once a day : the risk of collision is really lower and the number of time you will have to re-emit is, as a consequence, lower, so in this sub band you can expect to preserve your energy.

What is the range of an 865-868 MHz SRD?

The band 865-868 MHz is segmented for general SRD’s depending on its use. It ranges from 10mW to 500mW but with specific duty cycles and possible additional limitations on LBT (listen-before-transmit) protocols. You need absolutely to refer to CEPT rec. 70-03 annex 1 for general SRD’s to find out the limitations in a certain segment of 865-868 MHz.