v551 burst disrupts my stereo

just got a v551 and the problem is it interferes with my stereo
system. My old v600 used to cause interference on my stereo system only
when a call would be coming in. The v551 interferes even when there are
no calls incoming. It seems like the phone sends out or receives a
burst signal every so often and when it does, my stereo goes a little
nutz.

Its to the point where I want to get rid of the phone. Does anyone know
if the Razr is prone to this sort of thing??


Has anyone had a similar problem?


thanks

---

› See More: v551 burst disrupts my stereo

Once and for all...

This interference is a result of the frequencies used by GSM. If your GSM
handset is near the audio device (speaker phone, stereo, mp3 player or
almost anything with a speaker), you're going to get these sounds whenever
the handset transmits. This occurs periodically when the handset and the
cell site "handshake". That is, the cell site interrogates all handsets
within range and exchanges a small amount of data. Something like (cell
site) "..whomever is out there, identify yourself?". (handset) "...I'm
here and available. My number is xxx-xxx-xxxx".

Also, when someone calls your cellphone, the cell site broadcasts a data
stream to all handsets, looking for yours. Your handset then transmits a
short burst of data, identifying itself. (this is why you can sometimes
tell when the cell phone is about to ring). Then the cell site sends a
ringing signal and your handset rings.

During the time you're talking, the handset is transmitting, so the
interference continues.

Generally, all GSM handsets should cause about the same amount of
interference. The variables are; 1) distance between the handset and the
audio device, 2) shielding of audio components inside the device being
interfered with.
****************************************************************************
***
Since this question comes up about once every 2 - 3 days here, let's just
copy and repost it occasionally.

<[email protected]> wrote in message
news:[email protected]...
> just got a v551 and the problem is it interferes with my stereo
> system. My old v600 used to cause interference on my stereo system only
> when a call would be coming in. The v551 interferes even when there are
> no calls incoming. It seems like the phone sends out or receives a
> burst signal every so often and when it does, my stereo goes a little
> nutz.
>
> Its to the point where I want to get rid of the phone. Does anyone know
> if the Razr is prone to this sort of thing??
>
>
> Has anyone had a similar problem?
>
>
> thanks
>

"Craven Morehead" <[email protected]> writes:
> Once and for all...
>
> This interference is a result of the frequencies used by GSM. If your GSM
> handset is near the audio device (speaker phone, stereo, mp3 player or
> almost anything with a speaker), you're going to get these sounds whenever
> the handset transmits. This occurs periodically when the handset and the
> cell site "handshake". That is, the cell site interrogates all handsets
> within range and exchanges a small amount of data. Something like (cell
> site) "..whomever is out there, identify yourself?". (handset) "...I'm
> here and available. My number is xxx-xxx-xxxx".
>
> Also, when someone calls your cellphone, the cell site broadcasts a data
> stream to all handsets, looking for yours. Your handset then transmits a
> short burst of data, identifying itself. (this is why you can sometimes
> tell when the cell phone is about to ring). Then the cell site sends a
> ringing signal and your handset rings.
>
> During the time you're talking, the handset is transmitting, so the
> interference continues.
>
> Generally, all GSM handsets should cause about the same amount of
> interference. The variables are; 1) distance between the handset and the
> audio device, 2) shielding of audio components inside the device being
> interfered with.
> ****************************************************************************

It's a good FAQ you have posted here--thanks for that.

Is it possible that the phone to phone variation the poster is seeing,
though, are a function of the transmit strength of the phone in
question though? Or are all phones very close in their transmit
power under all circumstances.

I did not check, however if his original phone was TDMA. If so, that
certainly takes care of the "why did the old phone not do this"
issue.

With RFI, it stands to reason that the more powerful the radio in the
phone, the more audible the interference will be.

With my Nokia 3120 near my computer, I too only get the audio
interfence through the speakers just in advance of a call coming in to
ring the phone. The interference diminishes during the call, but
sometimes I do need to move my handset further from the powered
speakers otherewise I do hear it throughout the call sometimes, based
mostly on handset location relative to the speakers.

And good luck on your namesake quest, Craven M.

Best Regards,
--
Todd H.
http://www.toddh.net/

Todd H. et al,
Actually, the handset transmit power does vary. The cell site evaluates the
signal quality from the handset and commands the handset to increase or
decrease its transmit power. The goal is to provide just enough power to
achieve an adequate "signal to noise" (s/n ratio) at the cell site. Having
the handset transmit at a higher power level than necessary increases the
possibility of interference with other handsets and depletes the battery
sooner.

FWIT, when the handset is in a mobile hands-free cradle and connected to an
external antenna, less transmit power is needed to hit a cell site.
Unfortunately, this is usually of no consequence, since the handset is
powered from the vehicle's battery during this time.

Thanks for the wish of good luck. So far so good ;-)

"Todd H." <[email protected]> wrote in message news:[email protected]...
> "Craven Morehead" <[email protected]> writes:
> > Once and for all...
> >
> > This interference is a result of the frequencies used by GSM. If your
GSM
> > handset is near the audio device (speaker phone, stereo, mp3 player or
> > almost anything with a speaker), you're going to get these sounds
whenever
> > the handset transmits. This occurs periodically when the handset and
the
> > cell site "handshake". That is, the cell site interrogates all handsets
> > within range and exchanges a small amount of data. Something like (cell
> > site) "..whomever is out there, identify yourself?". (handset) "...I'm
> > here and available. My number is xxx-xxx-xxxx".
> >
> > Also, when someone calls your cellphone, the cell site broadcasts a data
> > stream to all handsets, looking for yours. Your handset then transmits
a
> > short burst of data, identifying itself. (this is why you can sometimes
> > tell when the cell phone is about to ring). Then the cell site sends a
> > ringing signal and your handset rings.
> >
> > During the time you're talking, the handset is transmitting, so the
> > interference continues.
> >
> > Generally, all GSM handsets should cause about the same amount of
> > interference. The variables are; 1) distance between the handset and
the
> > audio device, 2) shielding of audio components inside the device being
> > interfered with.
> >
****************************************************************************
>
> It's a good FAQ you have posted here--thanks for that.
>
> Is it possible that the phone to phone variation the poster is seeing,
> though, are a function of the transmit strength of the phone in
> question though? Or are all phones very close in their transmit
> power under all circumstances.
>
> I did not check, however if his original phone was TDMA. If so, that
> certainly takes care of the "why did the old phone not do this"
> issue.
>
> With RFI, it stands to reason that the more powerful the radio in the
> phone, the more audible the interference will be.
>
> With my Nokia 3120 near my computer, I too only get the audio
> interfence through the speakers just in advance of a call coming in to
> ring the phone. The interference diminishes during the call, but
> sometimes I do need to move my handset further from the powered
> speakers otherewise I do hear it throughout the call sometimes, based
> mostly on handset location relative to the speakers.
>
> And good luck on your namesake quest, Craven M.
>
> Best Regards,
> --
> Todd H.
> http://www.toddh.net/

Craven Morehead wrote:
> Once and for all...
>
> This interference is a result of the frequencies used by GSM. If
your GSM
> handset is near the audio device (speaker phone, stereo, mp3 player
or
> almost anything with a speaker), you're going to get these sounds
whenever
> the handset transmits. This occurs periodically when the handset and
the
> cell site "handshake". That is, the cell site interrogates all
handsets
> within range and exchanges a small amount of data. Something like
(cell
> site) "..whomever is out there, identify yourself?". (handset)
"...I'm
> here and available. My number is xxx-xxx-xxxx".
>
> Also, when someone calls your cellphone, the cell site broadcasts a
data
> stream to all handsets, looking for yours. Your handset then
transmits a
> short burst of data, identifying itself. (this is why you can
sometimes
> tell when the cell phone is about to ring). Then the cell site sends
a
> ringing signal and your handset rings.
>
> During the time you're talking, the handset is transmitting, so the
> interference continues.
>
> Generally, all GSM handsets should cause about the same amount of
> interference. The variables are; 1) distance between the handset
and the
> audio device, 2) shielding of audio components inside the device
being
> interfered with.
>
****************************************************************************
> ***
> Since this question comes up about once every 2 - 3 days here, let's
just
> copy and repost it occasionally.
>
> <[email protected]> wrote in message
> news:[email protected]...
> > just got a v551 and the problem is it interferes with my stereo
> > system. My old v600 used to cause interference on my stereo system
only
> > when a call would be coming in. The v551 interferes even when there
are
> > no calls incoming. It seems like the phone sends out or receives a
> > burst signal every so often and when it does, my stereo goes a
little
> > nutz.
> >
> > Its to the point where I want to get rid of the phone. Does anyone
know
> > if the Razr is prone to this sort of thing??
> >
> >
> > Has anyone had a similar problem?
> >
> >
> > thanks
> >

For the record. My v600 was a GSM phone, as is my v551.

Thx

<[email protected]> wrote in message
news:[email protected]...
>
> Craven Morehead wrote:
>> Once and for all...
>>
>> This interference is a result of the frequencies used by GSM. If
> your GSM
>> handset is near the audio device (speaker phone, stereo, mp3 player
> or
>> almost anything with a speaker), you're going to get these sounds
> whenever
>> the handset transmits. This occurs periodically when the handset and
> the
>> cell site "handshake". That is, the cell site interrogates all
> handsets
>> within range and exchanges a small amount of data. Something like
> (cell
>> site) "..whomever is out there, identify yourself?". (handset)
> "...I'm
>> here and available. My number is xxx-xxx-xxxx".
>>
>> Also, when someone calls your cellphone, the cell site broadcasts a
> data
>> stream to all handsets, looking for yours. Your handset then
> transmits a
>> short burst of data, identifying itself. (this is why you can
> sometimes
>> tell when the cell phone is about to ring). Then the cell site sends
> a
>> ringing signal and your handset rings.
>>
>> During the time you're talking, the handset is transmitting, so the
>> interference continues.
>>
>> Generally, all GSM handsets should cause about the same amount of
>> interference. The variables are; 1) distance between the handset
> and the
>> audio device, 2) shielding of audio components inside the device
> being
>> interfered with.
>>
> ****************************************************************************
>> ***
>> Since this question comes up about once every 2 - 3 days here, let's
> just
>> copy and repost it occasionally.
>>
>> <[email protected]> wrote in message
>> news:[email protected]...
>> > just got a v551 and the problem is it interferes with my stereo
>> > system. My old v600 used to cause interference on my stereo system
> only
>> > when a call would be coming in. The v551 interferes even when there
> are
>> > no calls incoming. It seems like the phone sends out or receives a
>> > burst signal every so often and when it does, my stereo goes a
> little
>> > nutz.
>> >
>> > Its to the point where I want to get rid of the phone. Does anyone
> know
>> > if the Razr is prone to this sort of thing??
>> >
>> >
>> > Has anyone had a similar problem?
>> >
>> >
>> > thanks
>> >
>
> For the record. My v600 was a GSM phone, as is my v551.
>
> Thx


Yep, so's the Razr.

bamp