Which is better 900 Mhz or 2.4 GHz?
What is the 900 MHz band used for?
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.Apr 28, 2020
Is 900 MHz unlicensed band?
Unlicensed spectrum includes the 900 MHz ISM band, extending from 902 to 928 MHz, and the 2.4 GHz and 5 GHz bands. To minimize interference, the FCC restricts the maximum transmit power for unlicensed devices and requires the use of spread spectrum technologies.
How far can 900 MHz travel?
The lower frequency radio waves of 900 MHz radios provide greater penetration through walls, trees and other obstacles, making it optimal for most non-line-of-sight applications. A typical AW900xTR Radio using high powered AW-15 15dbi antenna can go distances of up to 1500 feet with buildings and/or trees in the way.Jul 15, 2010
What wireless frequency is illegal?
Prohibition on use of the 700 MHz band
In 2010, the FCC prohibited the use of wireless mics and devices on unused broadcast channels on the 600 MHz service band and on the 700 MHz band – specifically the frequencies between 698 and 806 MHz.
What is the 800 MHz band used for?
Land Mobile Radio for Public Safety
Public safety radio systems (such as those used by police, firefighters and emergency medical technicians) operate in several portions of the 800 MHz band, which consists of spectrum at 806-824 MHz paired with spectrum at 851-869 MHz.Sep 17, 2018
Who owns 900mhz?
In September 2014 pdvWireless acquired Sprint Corporation's 900 MHz spectrum, which had been used to operate Nextel's iDEN network. We are the largest holder of licensed spectrum in the 900 MHz band (896-901/935-940 MHz) throughout the contiguous United States, plus Hawaii, Alaska, and Puerto Rico.
What is the bandwidth of a signal having 928 MHz and 902 MHz as its upper and lower frequencies?
What is the bandwidth of a signal having 928Mhz and 902Mhz as its upper and lower frequencies? Explanation: Bandwidth = upper frequency – lower frequency = 928Mhz – 902Mhz =26Mhz.
Is 900 Mhz a line of sight?
"Wireless Bridging System @ 900MHz for non line of sight links up to 18 miles. Capable of link speeds up to 150 megabits/second through dense foliage, heavy urban environments or any other line of sight obstructions that cause propagation issues with higher frequency 802.11A/B/G/N systems.
Why is 1800MHz better than 900 MHz?
There are two reasons why 900 Mhz is superior to the 1800 Mhz band. ... Simply put signals sent out using higher frequency bands will travel lesser distance than signals sent on a lower frequency band. This propagation characteristic also makes signals transmitted on 900 Mhz more potent when it comes to indoor coverage.Mar 12, 2018
What frequencies can penetrate walls?
Actually, we are most sensitive to frequencies between 2000–5000HZ, which means high frequencies. We hear the bass because low-frequency waves penetrate the walls better than high-frequencies. This is because higher frequencies lose energy quicker than low frequencies.
Does 2.4 GHz need line of sight?
Both frequencies need "line-of-sight" for proper and predictable operation. However some type of obstructions are more detrimental to a 2.4 GHz link. Trees with leaves that have dimensions near the wavelength of 2.4 GHz (but typically shorter than the wavelength of 900 MHz), will cause higher attenuation at 2.4 GHz.
Does 2.4 GHz go through trees?
Trees (mostly when they have leaves), as others have said, are horrible for wifi. 5Ghz doesn't penetrate anything well, and 2.4Ghz and water don't mix. If you can put something up on towers above the tree line that works too, but again, that isn't cheap.Nov 29, 2019