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Simply because of the band-width required to transmit and receive calls. If the channel spacing was narrower - they'd need to reduce the band-width - which would reduce the amount of data they could transmit.

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Q: Why channel spacing is 200khz in gsm?
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Related questions

How do you find 125 channel in gsm?

GSM Band 890 to 915= 25 MHz One GSM Channel BW= 200 KHz Total GSM channels=25MHz/200KHz=125


How many channels are present in GSM 900?

174 no ........ the uplink is 890-915 & down link is 935-960.....MHz each channel having band width of 200KHz & using by 8 subsciber.... so 25MHz/200Khz ......=125...so there are 125 channels present in GSM900 but one channel is use as a guard so only 124 channel present in GSM900


Why in gsm we are taking 200kHz as bandwidth why we cant take 100kHz or some thing less than 200kHz so that we can increase the ARFCNs.?

because we can use 99% of 270.5 kbps which is normally used for air interface in gsm, to get a minimum bit error rate of 1% and 8/1 db sn ratio.


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WDM classification is based on channel spacing between two wavelengths * channel spacing greater than 200GHZ is called as CWDM * channel spacing greater than 100GHZ is called as WDM * channel spacing lesser than 100GHZ is called as DWDM * channel spacing lesser than 25GHZ is called as UDWDM 100GHZ = 0.8nm WDM classification is based on channel spacing between two wavelengths * channel spacing greater than 200GHZ is called as CWDM * channel spacing greater than 100GHZ is called as WDM * channel spacing lesser than 100GHZ is called as DWDM * channel spacing lesser than 25GHZ is called as UDWDM 100GHZ = 0.8nm


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Channel spacing is the difference in the frequency allocation of the allocated frequency plan to avoid overlap between the channels or frequencies.


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-- aeronautical mobile -- aeronautical radionavigation


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Is it possible to make an Electronic Pest Repellent using Arduino and make ultrasound from 30khz to 200khz frequency?

Yes it is possible to make an Electronic Pest Repellent using Arduino and possible to make ultrasound for 30khz to 200khz frequency; you must make a rectangle signal with a frequency and amplify it with transistors.


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link acess protocol for the D channel is used in the radio link between bts and ms


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