Genetic Linkage. Two pops may have the same allele frequencies but different chromosome frequencies.
Different Cellular Frequencies in Different Countries
Transcript of Different Cellular Frequencies in Different Countries
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The Different Cellular
Frequencies in the World
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• Different countries use different cellular frequencies in the world.• In US,the main frequency bands in communications are GSM850,
GSM1900, 3G (850/1900 and 1700/2100) and 4G (Verizon USA 4G, Sprint Clearwire WiMAX and T-Mobile 4G).
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• You can see the details from the sheet which lists different bands and technologies that the main carriers in the US used as follow(from wikipedia):
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• In the table the cdmaone and UMTS mean the different generations of the mobile phone and the different technologies.You can see the different generations in the table(from wikipedia):
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• What about the other countries? You may be confused about their differences.You can see the exact informations from the map(from worldtimezone.com):
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• In conclusion:• GSM 900 / GSM 1800 MHz are used in most parts of the world:
Europe, Asia, Australia, Middle East, Africa in the blue area of the map.
• GSM 850 / GSM 1900 MHz are used in the United States, Canada, Mexico and most countries of S. America in the yellow area of the map.
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• So if I wanna go to China or Europe,is it that my cell phone cannot work according to the situation? Don’t worry.
• Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1800/1900 MHz) or four bands (850/900/1800/1900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones; with such a phone one can travel internationally and use the same handset. • So if you want to buy gsm jammer,you should know that where do
you want to use and what frequencies can the jammer support.Only then can you achieve your purpose. • http://www.jammer-buy.com/gsm-jammer/c-26.html
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• 4 bands cell phone jammer from:• http://www.jammer-buy.com/gsm-jammer/p-6958.html