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  1. #1
    Digital Puer
    Guest
    I just got a Motorola v551 phone. For some reason, my computer
    speakers are picking up some odd interference every hour or so
    from the phone. The interference comes out as a series of
    crackles, maybe 5-6 crackles. The same thing happens when I
    boot up the phone. Granted my speakers are about 4 years old
    (cheapo Altec Lansing 340 from Dell purchase) but I have
    never had this problem.

    Does anyone know what's going on? I never had this problem
    with my old Motorola StarTac on Sprint.




    See More: Moto V551: hourly interference with computer speakers?




  2. #2
    Mike S.
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    In article <[email protected]>,
    Digital Puer <[email protected]> wrote:
    >I just got a Motorola v551 phone. For some reason, my computer
    >speakers are picking up some odd interference every hour or so
    >from the phone. The interference comes out as a series of
    >crackles, maybe 5-6 crackles. The same thing happens when I
    >boot up the phone. Granted my speakers are about 4 years old
    >(cheapo Altec Lansing 340 from Dell purchase) but I have
    >never had this problem.
    >
    >Does anyone know what's going on? I never had this problem
    >with my old Motorola StarTac on Sprint.


    Your speakers are detecting data bursts from the phone.
    GSM data bursts are at 217 Hz which is in the range of human hearing.
    You did not hear them before because Sprint uses CDMA - entirely different
    signalling.




  3. #3
    Digital Puer
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    Mike S. wrote:
    > In article <[email protected]>,
    > Digital Puer <[email protected]> wrote:
    > >I just got a Motorola v551 phone. For some reason, my computer
    > >speakers are picking up some odd interference every hour or so
    > >from the phone. The interference comes out as a series of
    > >crackles, maybe 5-6 crackles. The same thing happens when I
    > >boot up the phone. Granted my speakers are about 4 years old
    > >(cheapo Altec Lansing 340 from Dell purchase) but I have
    > >never had this problem.
    > >
    > >Does anyone know what's going on? I never had this problem
    > >with my old Motorola StarTac on Sprint.

    >
    > Your speakers are detecting data bursts from the phone.
    > GSM data bursts are at 217 Hz which is in the range of human hearing.


    > You did not hear them before because Sprint uses CDMA - entirely

    different
    > signalling.



    Thanks for the info. So I take it the problem is with my
    speakers? Certainly they are decrepit (low-end model from
    2001), but I don't think that that should be an issue.




  4. #4
    bamp
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    "Digital Puer" <[email protected]> wrote in message
    news:[email protected]...
    >
    > Mike S. wrote:
    >> In article <[email protected]>,
    >> Digital Puer <[email protected]> wrote:
    >> >I just got a Motorola v551 phone. For some reason, my computer
    >> >speakers are picking up some odd interference every hour or so
    >> >from the phone. The interference comes out as a series of
    >> >crackles, maybe 5-6 crackles. The same thing happens when I
    >> >boot up the phone. Granted my speakers are about 4 years old
    >> >(cheapo Altec Lansing 340 from Dell purchase) but I have
    >> >never had this problem.
    >> >
    >> >Does anyone know what's going on? I never had this problem
    >> >with my old Motorola StarTac on Sprint.

    >>
    >> Your speakers are detecting data bursts from the phone.
    >> GSM data bursts are at 217 Hz which is in the range of human hearing.

    >
    >> You did not hear them before because Sprint uses CDMA - entirely

    > different
    >> signalling.

    >
    >
    > Thanks for the info. So I take it the problem is with my
    > speakers? Certainly they are decrepit (low-end model from
    > 2001), but I don't think that that should be an issue.


    No, there's nothing wrong with your speakers. Mine pick up the same thing
    and there's nothing wrong with them. I also get the intereference, just
    before my phone rings.

    bamp





  5. #5
    Joe Fabeitz
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    Conceptually, on the right track but technically, wrong.
    "Mike S." <[email protected]> wrote in message
    news:[email protected]...
    >
    > In article <[email protected]>,
    > Digital Puer <[email protected]> wrote:
    > >I just got a Motorola v551 phone. For some reason, my computer
    > >speakers are picking up some odd interference every hour or so
    > >from the phone. The interference comes out as a series of
    > >crackles, maybe 5-6 crackles. The same thing happens when I
    > >boot up the phone. Granted my speakers are about 4 years old
    > >(cheapo Altec Lansing 340 from Dell purchase) but I have
    > >never had this problem.
    > >
    > >Does anyone know what's going on? I never had this problem
    > >with my old Motorola StarTac on Sprint.

    >
    > Your speakers are detecting data bursts from the phone.
    > GSM data bursts are at 217 Hz which is in the range of human hearing.
    > You did not hear them before because Sprint uses CDMA - entirely different
    > signalling.
    >






  6. #6
    Digital Puer
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    bamp wrote:
    > "Digital Puer" <[email protected]> wrote in message
    > news:[email protected]...
    > >
    > > Mike S. wrote:
    > >> In article

    <[email protected]>,
    > >> Digital Puer <[email protected]> wrote:
    > >> >I just got a Motorola v551 phone. For some reason, my computer
    > >> >speakers are picking up some odd interference every hour or so
    > >> >from the phone. The interference comes out as a series of
    > >> >crackles, maybe 5-6 crackles. The same thing happens when I
    > >> >boot up the phone. Granted my speakers are about 4 years old
    > >> >(cheapo Altec Lansing 340 from Dell purchase) but I have
    > >> >never had this problem.
    > >> >
    > >> >Does anyone know what's going on? I never had this problem
    > >> >with my old Motorola StarTac on Sprint.
    > >>
    > >> Your speakers are detecting data bursts from the phone.
    > >> GSM data bursts are at 217 Hz which is in the range of human

    hearing.
    > >
    > >> You did not hear them before because Sprint uses CDMA - entirely

    > > different
    > >> signalling.

    > >
    > >
    > > Thanks for the info. So I take it the problem is with my
    > > speakers? Certainly they are decrepit (low-end model from
    > > 2001), but I don't think that that should be an issue.

    >
    > No, there's nothing wrong with your speakers. Mine pick up the same

    thing
    > and there's nothing wrong with them. I also get the intereference,

    just
    > before my phone rings.
    >
    > bamp




    I think there is indeed something wrong somewhere. My
    speakers are supposedly shielded from interference.
    Whether my v551 is emitting illegal signals or the
    speakers are sub-standard, there is something wrong.
    The hourly crackling interference is extremely annoying
    (particularly with that movie "white Noise" coming out...
    yikes!).




  7. #7
    Larry Moss
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    On 2005-01-06, Digital Puer <[email protected]> wrote:
    >
    > I think there is indeed something wrong somewhere. My
    > speakers are supposedly shielded from interference.
    > Whether my v551 is emitting illegal signals or the
    > speakers are sub-standard, there is something wrong.
    > The hourly crackling interference is extremely annoying
    > (particularly with that movie "white Noise" coming out...
    > yikes!).


    I think this is the only really annoying thing I've run into since
    switching to Cingular a couple months ago. I get the same thing. I meant
    to post about it as well. I don't think you can blame the speakers since I
    hear it on my office speakers, my living room equipment, and my car stereo.
    All, while not top of the line, are decent systems and in excellent shape I
    don't know if it's the v551 that has an issue, or if it is indeed something
    unavoidable with GSM.

    --
    Larry Moss, http://www.airigami.com
    PO Box 23523, Rochester, NY 14692, (585) 359-8695
    Airigami: The art of folding air in specially prepared latex containers.



  8. #8
    Mike S.
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    In article <[email protected]>,
    Digital Puer <[email protected]> wrote:
    >
    >bamp wrote:
    >> "Digital Puer" <[email protected]> wrote in message
    >> news:[email protected]...
    >> >
    >> > Mike S. wrote:
    >> >> In article

    ><[email protected]>,
    >> >> Digital Puer <[email protected]> wrote:
    >> >> >I just got a Motorola v551 phone. For some reason, my computer
    >> >> >speakers are picking up some odd interference every hour or so
    >> >> >from the phone. The interference comes out as a series of
    >> >> >crackles, maybe 5-6 crackles. The same thing happens when I
    >> >> >boot up the phone. Granted my speakers are about 4 years old
    >> >> >(cheapo Altec Lansing 340 from Dell purchase) but I have
    >> >> >never had this problem.
    >> >> >
    >> >> >Does anyone know what's going on? I never had this problem
    >> >> >with my old Motorola StarTac on Sprint.
    >> >>
    >> >> Your speakers are detecting data bursts from the phone.
    >> >> GSM data bursts are at 217 Hz which is in the range of human

    >hearing.
    >> >
    >> >> You did not hear them before because Sprint uses CDMA - entirely
    >> > different
    >> >> signalling.
    >> >
    >> >
    >> > Thanks for the info. So I take it the problem is with my
    >> > speakers? Certainly they are decrepit (low-end model from
    >> > 2001), but I don't think that that should be an issue.

    >>
    >> No, there's nothing wrong with your speakers. Mine pick up the same

    >thing
    >> and there's nothing wrong with them. I also get the intereference,

    >just
    >> before my phone rings.
    >>
    >> bamp

    >
    >
    >
    >I think there is indeed something wrong somewhere. My
    >speakers are supposedly shielded from interference.
    >Whether my v551 is emitting illegal signals or the
    >speakers are sub-standard, there is something wrong.
    >The hourly crackling interference is extremely annoying
    >(particularly with that movie "white Noise" coming out...
    >yikes!).



    Typically "shielded" speakers are designed to prevent excess magnetism
    from affecting nearby CRT's and other devices sensitive to magnetic
    fields. This is entirely a different issue ... and one which had been
    predicted in the early days of GSM implementation in the US.








  9. #9
    Digital Puer
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    Larry Moss wrote:
    > On 2005-01-06, Digital Puer <[email protected]> wrote:
    > >
    > > I think there is indeed something wrong somewhere. My
    > > speakers are supposedly shielded from interference.
    > > Whether my v551 is emitting illegal signals or the
    > > speakers are sub-standard, there is something wrong.
    > > The hourly crackling interference is extremely annoying
    > > (particularly with that movie "white Noise" coming out...
    > > yikes!).

    >
    > I think this is the only really annoying thing I've run into since
    > switching to Cingular a couple months ago. I get the same thing. I

    meant
    > to post about it as well. I don't think you can blame the speakers

    since I
    > hear it on my office speakers, my living room equipment, and my car

    stereo.
    > All, while not top of the line, are decent systems and in excellent

    shape I
    > don't know if it's the v551 that has an issue, or if it is indeed

    something
    > unavoidable with GSM.
    >



    Thanks for the info.

    If anyone else with Cingular has a phone that's not
    the Motorola v551, could you tell us if you get the
    hourly crackling noise interference on your speakers.




  10. #10
    Digital Puer
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    bamp wrote:
    > "Digital Puer" <[email protected]> wrote in message
    > news:[email protected]...
    > >
    > > Mike S. wrote:
    > >> In article

    <[email protected]>,
    > >> Digital Puer <[email protected]> wrote:
    > >> >I just got a Motorola v551 phone. For some reason, my computer
    > >> >speakers are picking up some odd interference every hour or so
    > >> >from the phone. The interference comes out as a series of
    > >> >crackles, maybe 5-6 crackles. The same thing happens when I
    > >> >boot up the phone. Granted my speakers are about 4 years old
    > >> >(cheapo Altec Lansing 340 from Dell purchase) but I have
    > >> >never had this problem.
    > >> >
    > >> >Does anyone know what's going on? I never had this problem
    > >> >with my old Motorola StarTac on Sprint.
    > >>
    > >> Your speakers are detecting data bursts from the phone.
    > >> GSM data bursts are at 217 Hz which is in the range of human

    hearing.
    > >
    > >> You did not hear them before because Sprint uses CDMA - entirely

    > > different
    > >> signalling.

    > >
    > >
    > > Thanks for the info. So I take it the problem is with my
    > > speakers? Certainly they are decrepit (low-end model from
    > > 2001), but I don't think that that should be an issue.

    >
    > No, there's nothing wrong with your speakers. Mine pick up the same

    thing
    > and there's nothing wrong with them. I also get the intereference,

    just
    > before my phone rings.
    >
    > bamp



    By the way, which model cell phone do you have? Do you hear the
    interference on a periodic basis (e.g. every hour)?




  11. #11
    Steve
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    The noise coming through the speakers is due to the GSM signalling,
    particularly on 850mhz systems. When the phone is transmitting, your
    speakers act as an antenna of sorts and pick up the buzz.

    Just keep your phone farther away from the speakers. Nothing wrong with the
    phone or speakers.

    --
    Steve
    "Joe Fabeitz" <[email protected]> wrote in message
    news:[email protected]...
    > Conceptually, on the right track but technically, wrong.
    > "Mike S." <[email protected]> wrote in message
    > news:[email protected]...
    >>
    >> In article <[email protected]>,
    >> Digital Puer <[email protected]> wrote:
    >> >I just got a Motorola v551 phone. For some reason, my computer
    >> >speakers are picking up some odd interference every hour or so
    >> >from the phone. The interference comes out as a series of
    >> >crackles, maybe 5-6 crackles. The same thing happens when I
    >> >boot up the phone. Granted my speakers are about 4 years old
    >> >(cheapo Altec Lansing 340 from Dell purchase) but I have
    >> >never had this problem.
    >> >
    >> >Does anyone know what's going on? I never had this problem
    >> >with my old Motorola StarTac on Sprint.

    >>
    >> Your speakers are detecting data bursts from the phone.
    >> GSM data bursts are at 217 Hz which is in the range of human hearing.
    >> You did not hear them before because Sprint uses CDMA - entirely
    >> different
    >> signalling.
    >>

    >
    >






  12. #12
    John Navas
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    [POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

    In <[email protected]> on 6 Jan 2005
    14:23:02 -0800, "Digital Puer" <[email protected]> wrote:

    >If anyone else with Cingular has a phone that's not
    >the Motorola v551, could you tell us if you get the
    >hourly crackling noise interference on your speakers.


    You'll get it with any GSM phone, including my Sony Ericsson Z600.

    --
    Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
    John Navas <http://navasgrp.home.att.net/#Cingular>



  13. #13
    John Navas
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    [POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

    In <[email protected]> on 6 Jan 2005
    14:24:17 -0800, "Digital Puer" <[email protected]> wrote:

    >By the way, which model cell phone do you have? Do you hear the
    >interference on a periodic basis (e.g. every hour)?


    That's probably the periodic re-registration of the phone with the tower.

    --
    Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
    John Navas <http://navasgrp.home.att.net/#Cingular>



  14. #14
    Jer
    Guest

    Re: Moto V551: hourly interference with computer speakers?

    Steve wrote:

    > The noise coming through the speakers is due to the GSM signalling,
    > particularly on 850mhz systems. When the phone is transmitting, your
    > speakers act as an antenna of sorts and pick up the buzz.
    >
    > Just keep your phone farther away from the speakers. Nothing wrong with the
    > phone or speakers.
    >



    It ain't the speakers - it's the wires connecting the speakers to the
    amp equipment that pick up the interference. My remedy was to use
    coaxial cables for the speaker wires. Aside from that, the only other
    thing that can be done is physical separation of more than a few feet.
    Most cell phone wired headsets have a filter circuit embedded in the
    headset jack and blue tooth headsets don't need it.

    --
    jer
    email reply - I am not a 'ten'



  15. #15
    Digital Puer
    Guest

    Re: Moto V551: hourly interference with computer speakers?


    Jer wrote:
    > Steve wrote:
    >
    > > The noise coming through the speakers is due to the GSM signalling,


    > > particularly on 850mhz systems. When the phone is transmitting,

    your
    > > speakers act as an antenna of sorts and pick up the buzz.
    > >
    > > Just keep your phone farther away from the speakers. Nothing wrong

    with the
    > > phone or speakers.
    > >

    >
    >
    > It ain't the speakers - it's the wires connecting the speakers to the


    > amp equipment that pick up the interference. My remedy was to use
    > coaxial cables for the speaker wires. Aside from that, the only

    other
    > thing that can be done is physical separation of more than a few

    feet.
    > Most cell phone wired headsets have a filter circuit embedded in the
    > headset jack and blue tooth headsets don't need it.
    >
    > --
    > jer
    > email reply - I am not a 'ten'




    Jer - you are absolutely right, it's the unshielded
    audio wire that's causing the problem. I have a thick
    cable coming from my subwoofer up the front side of my
    desk to the satellite speakers. Last night when I
    put down my new cell phone prior to going to bed, I
    positioned it right next to the cable. Thanks for the
    insight. Interestingly, the cable is shielded enough
    such that I don't get any usual interference from
    my CPU case. Guess the GSM signal must be stronger.




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