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Long live analog

Discussion in 'GENERAL Wireless Discussion' started by agentHibby, May 2, 2004.

  1. agentHibby

    agentHibby Iowa Cellular Guru
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    Shouldn't the 1st post be about the original cellular technology??
    FDMA technology! Reasons for FDMA (AMPS) well it is in 1% more places in the US than digital. Your phone works harder in AMPS mode so you will have less dropped calls. Your phone will get hotter in analog so you know its working! Analog has only 1 caller per channel. The voice channel can only have a 1 caller and 1 receiver not like CDMA where you have 10 callers per channel.

    Ok so I did the best I could to defended analog. Yes there are tons more reason to be in digital. I don't think I can keep this up until 2008 ;)

    Yes I really like digital better than analog!
     
  2. GoodmanR

    GoodmanR Silver Senior Member
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    When you have a full analog signal though, you CANNOT beat the call quality.
     
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  3. Gamer03

    Gamer03 Technology Aficionado
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    Yes, that is true, unless you are still in an area that is analog only...;)
     
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  4. WirelessBeachBum

    WirelessBeachBum Soylent Green is People
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    Welcome to Kentucky and Maine...I'd be in trouble since my i600 and Blackberry are digital only...but no fear, I'll grab the gsp-1600 satellite phone out of the glove box and have it covered.

    Man I don't miss analog at all.

    When we lived in Martinsville VA my wife worked in Roanoke and would drive home on 220 (nice curvy highway) and I could tell exactly where she was by the sound quality of the call, there was one point where she would drive for about 1/2 mile when we could not hear each other, but the call would not drop, I always knew she was 15 minutes from home when that happened.
     
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  5. Gamer03

    Gamer03 Technology Aficionado
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    Man, I wish I had that special ability...that's pretty cool...;):p
     
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  6. budney

    budney Resident Headbanger
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    I agree with GoodmanR. I have been lucky enough to use some great analog networks (Alltel, & Mohave Wireless), and the sound quality is great. Without a doubt digital is much better over all. :)
     
  7. DarkKnight

    DarkKnight Junior Member
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    Without a doubt digital is the way to go but analog is a good safety net to have when you need it ;) but I remember on my old airtouch phone from like 8 yrs ago I would get static & a crackling sound during calls
     
  8. xikle

    xikle For rent: inquire below
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    Yep, analog makes a good backup when you can't afford a sat phone and are stuck in the middle of no where and have to make a call.
     
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  9. NokiaKrazy

    NokiaKrazy 2010. I'm still around
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    Analog works good from 12,000 mountain tops. I was at this elevation, can see the tower 35 miles away. Phone was recieving a digital signal, could not make the call. Forced the phone into analog, worked perfect!
     
  10. ILUVSOCAL

    ILUVSOCAL Banned
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    NAMPS improved on the 1 caller per channel thing, and split the 30 mhz of each channel into three 10 mhz parts, so essentially you could carry three calls where only one would fit before. Up here, Verizon (and before them GTE, and before them Contel) is running NAMPS, and support caller id and vmwi.
     
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  11. Yankees368

    Yankees368 Compulsive Signal Checker
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    So if whe im on analog and caller ID works, Verizon and ATT are running NAMPS?
     
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  12. SNSE

    SNSE Senior Member
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    The IS-136 standard was where the caller ID and VM indicator came into play for analog cell site equipment. The cell site DOES NOT have to be NAMPS for this to work, it just has to be an IS-136 compatible radio on the Control (or Signalling) channel. Back in '97, we had to change out a bunch of radios so Caller ID and MWI would work on our customer's TDMA phones in analog mode. More of a software/hardware revision thing.
     
  13. bobolito

    bobolito Diamond Senior Member
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    The problem with NAMPS is that it suffered from cross-channel interference in crowded environments. Sometimes you could hear the conversation in the channel next to you. In addition, the sound quality was not nearly as good as the original AMPS.
     
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  14. siliconvalley785

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    Analog is the only true cellular backup that provides almost true nationwide coverage. It's the backbone of the infrastructure, without it, nothing would be possible, and we would not have the high standards of CDMA, GSM, TDMA, iDEN, etc. without it. Let's hear it for analog!

    Pritesh
     
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  15. agentHibby

    agentHibby Iowa Cellular Guru
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    Wow this thread really worked out well for info :D
    Thanks! :)
     
  16. bobolito

    bobolito Diamond Senior Member
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    Sorry, but that's incorrect. Analog only set the foundation for TDMA and CDMA. For GSM and iDEN, you don't need analog or any components of an analog network at all.
     
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  17. agentHibby

    agentHibby Iowa Cellular Guru
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    I second that
     
  18. Bugwart

    Bugwart Bronze Senior Member
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    Bobolito, you are correct that GSM and iDEN were not built on analog, but analog was the forerunner for all current terrestrial systems. Assuming this, analog was also the basis for GSM and iDEN.

    The concept of the "cell" is consistent throughout today's wireless networks whether they use the ANSI 41 or the MAP core.
     
  19. agentHibby

    agentHibby Iowa Cellular Guru
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    AMPS started in 1971? finished around 78 or 79? phones came out around 83?

    GSM started 81, finished 82 in primative verison? GSM the way we know it came in 89? became popular around 91?

    anything in there right? :confused:
     
  20. siliconvalley785

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    Alright, it appears I was wrong somewhere in my rambling, but I'm sure you guys will set it straight in time.

    Pritesh
     
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  21. agentHibby

    agentHibby Iowa Cellular Guru
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    I think we all can agree AMPS came before GSM. It is GSM is not a predecessor of Analog like Sprint Cellular is not a predecessor of Sprint PCS, since Sprint Spectrum dropped sprint cellular when they went nationwide with PCS. I hope that makes any sence??

    I made tons of mistakes on this board, and will make tons more and they still let me post anyway? :)
     
  22. MrFlashport

    MrFlashport Junior Member
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    The first AMPS system (sys ID 0001) was in the Chicago area, installed by Motorola in late 1978 and ran a trial under an STA during 1979 according to FCC records.

    AMPS systems were first opened to general use by operators in 1981.
    GSM standard was first developed in 1988/89, and then the buildout began in 1991. Before GSM, there was ETACS, an analog system that was the predominant system in Europe. Other analog systems such as NMT450, a UHF 450MHz band system that was used in Scandanavian countries before GSM.

    As a side, analog FM is still the primary mode of transmission in other parts of the radio spectrum than any digital. In the public safety world, analog is still dominant for reasons of reliability, cost of maintenance, and interoperability. Most other SMR's still use analog FM (LTR, EDACS, etc) and it will be around for quite some time. Outside the cellular/PCS world, digital RF is still in it's infancy.
     
  23. GoodmanR

    GoodmanR Silver Senior Member
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    Just because AMPS came first, it doesn't mean that the development of GSM was dependent on Analog.
     
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  24. Tony E!

    Tony E! Retired Mod
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    reminds me of the first cordless phones...
     
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  25. Yankees368

    Yankees368 Compulsive Signal Checker
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    I remember those. The old kind where my play walkie-talkie would pick up the conversation. That dosent happen much anymore, does it.
     
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  26. jones

    jones Silver Senior Member
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    Convert those Analog Channels to Digital and you'll Have CAPACITY Relief.
    Other countries have done it, Why not the USA?
     
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  27. ILUVSOCAL

    ILUVSOCAL Banned
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    Well, one reason is there are still a lot of people using analog phones, also, carriers are required by the FCC to keep analog on until I believe 2007 or 2008.
     
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  28. AnthroMatt

    AnthroMatt Big Meanie
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    Not to mention that many "all-digital" countries really aren't as rural (in terms of land area) as the United States. It's not nearly as hard to cover all of rural France in GSM towers as it would be to put up enough sites for adaquate coverage all over the Great Basin and Great Plains, west Texas, etc. of the US. Since old analog phones have a much higher wattage output than new digital phones, companies would need to put up a lot more towers to allow newer phones to make use of the signals too.
     
  29. ILUVSOCAL

    ILUVSOCAL Banned
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    Some more good points Matt, though now that I think of it Australia recently turned off their last analog sites, and they have some pretty rural and isolated areas, most of the interior is about as wild and open as anything here, if not more so.
     
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  30. AnthroMatt

    AnthroMatt Big Meanie
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    But is the digital coverage comparable to what it was before they shut off analog? If so, that's great.
     

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