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GSM,TDMA and CDMA

Discussion in 'GENERAL Wireless Discussion' started by ChaosThyre81, Jun 14, 2006.

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  1. ChaosThyre81

    ChaosThyre81 Member
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    And it just so happens 800 Mhz and 1.9 Ghz interefere? Why do cellular companies use these frequencies if they cause interference?
     
    #31 ChaosThyre81, Jul 2, 2006
  2. Scrumhalf

    Scrumhalf Bronze Senior Member
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    Once again, it is not 800MHz and 1.9GHz that interfere - they don't. It is the specific modulation related to TDMA timeslots that is detected. And the buzzing also has to do with inferior circuit design and shielding in the speaker circuitry. Usually, it can happen on some low end speakers, e.g. computer speakers, landline speakerphones, etc. I have never heard buzzing in my high end audio system.
     
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    #32 Scrumhalf, Jul 3, 2006
  3. KevinJames

    KevinJames WA's 1st retired mod
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    #33 KevinJames, Jul 3, 2006
  4. Scrumhalf

    Scrumhalf Bronze Senior Member
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    That's a pretty nice site with a lot of the basics. Thanks for posting the link!
     
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    #34 Scrumhalf, Jul 3, 2006
  5. ChaosThyre81

    ChaosThyre81 Member
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    Analog doesn't use timeslots, so if the frequency itself causes the buzzing, then why did they decide to use this section of the spectrum? Or, is it the modulating of frequencies above or below the carrier that causes the interference or...? It doesn't 'burst' like GSM/TDMA so it doesn't make sense that analog could interfere with my speakers. Any good places on the web to read up on this or books you know of?

    Thanks,
    Mike.
     
    #35 ChaosThyre81, Jul 4, 2006
  6. ChaosThyre81

    ChaosThyre81 Member
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    Thanks for the link, but it doesn't go much into TDMA/GSM interferring with other electronics. =(
     
    #36 ChaosThyre81, Jul 4, 2006
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