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Probably a dumb question, but one of curiousity...

Discussion in 'Western US Wireless Forum' started by 714tmobile, Nov 27, 2002.

  1. 714tmobile

    714tmobile Senior Member
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    I've noticed that CDMA phones all have retractable antannaes, but GSM and TDMA phones for the most part do not.

    I was wondering why this is...
     
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  2. Matt

    Matt Twin girls!
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    I know Verizon had a requirement that forbid internal antennas, not sure if they got rid of that or not.....
     
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  3. chefofthefuture

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    I've often wondered what it would be like if I had a retractable antenna on my v60g. Pulling up the antenna on the T720 makes a world of difference in low signal areas.
     
  4. lilprincess2

    lilprincess2 Bronze Senior Member
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    That's a good question 714tmobile, i would be curious as to know this too. My nokia 8260 from cingular did not have an antenna either and now being with verizon all of their phones do have antenna's.
     
  5. 714tmobile

    714tmobile Senior Member
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    I wonder if it has anything to do with GSM itself rather than the freq. it runs on...

    Ever notice how GSM phones interfere with speakers and the radio when a call comes in? such has hearing the speakers on your computer start to make a popping sound when a call is about to come in..
     
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  6. IdiOTeQnoLogY

    IdiOTeQnoLogY Bronze Senior Member
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    when i put my cdma sprint phones in field test mode i can see a gain of about 5-9db with the antenna all the way up which can make or break the difference between a robovoice call and a clear one in fringe signal areas.
     
  7. larry

    larry Sprint loyalist and former mod
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    Wow. Here in Orange County I rarely ever extend my antenna and calls are just as good with it up or down. I guess when you have a strong signal it doesn't really make much difference.
     
  8. ILUVSOCAL

    ILUVSOCAL Banned
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    It doesn't anywhere in California or Nevada I've been either, except in fringe areas, where it can make the difference between a usable signal and nothing.
     
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  9. 714tmobile

    714tmobile Senior Member
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    Hmm... few GSM phones have external antannaes, and those that do are stubs... is it that CDMA in and of itself is more sensative to antannae *type*?
     
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  10. frail47

    frail47 New Member

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    There is no technological requirement for extendable/retractable antennas. CDMA carriers do this for two reasons: 1) simply because it's just good practice, the longer the antenna the better the reception(if only a miniscule difference) 2)Because CDMA operates at a lower power than GSM and TDMA which throws us back to reason number 1.

    Personally I rarely extend my antenna and even when I do I don't notice a difference in reception, but hey, it's still a good idea. I personally like the external antennas(keeps the RF away from my head more than an internal antenna).
     

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