GSM buzz

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An annoying buzz which only the person you are talking to can hear has been an issue with the [[GTA02]].  It has been discussed in several posts on the community mailing list. One early one is here [http://lists.openmoko.org/nabble.html#nabble-td1509627|a1509627]. There is a fix for it, but it requires highly technical hardware skills.  The file [http://people.openmoko.org/joerg/GSM_EMI_noise/big-C_rework_SOP_rc2.pdf big-C_rework_SOP_rc2.pdf], which describes the soldering required to fix the buzz, can be found here [http://people.openmoko.org/joerg/GSM_EMI_noise/] as can a user's post of their result, here [http://anyotherkey.googlepages.com/c].   
 
An annoying buzz which only the person you are talking to can hear has been an issue with the [[GTA02]].  It has been discussed in several posts on the community mailing list. One early one is here [http://lists.openmoko.org/nabble.html#nabble-td1509627|a1509627]. There is a fix for it, but it requires highly technical hardware skills.  The file [http://people.openmoko.org/joerg/GSM_EMI_noise/big-C_rework_SOP_rc2.pdf big-C_rework_SOP_rc2.pdf], which describes the soldering required to fix the buzz, can be found here [http://people.openmoko.org/joerg/GSM_EMI_noise/] as can a user's post of their result, here [http://anyotherkey.googlepages.com/c].   
  
[[OpenMoko]] has a program offering the big-C rework for owners of the model [[A5]] and [[A6]] FreeRunners in [http://sdgsystems.com/estore/cart.php?target=product&product_id=269&category_id=17 the United States] and [http://www.handheld-linux.com/wiki.php?page=Buzz-Rework the EU].  Please see [http://lists.openmoko.org/pipermail/community/2009-June/049106.html the mailing list announcement] for more details.
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[[OpenMoko]] has a program offering the big-C rework for owners of the model A5 and A6 FreeRunners in [http://sdgsystems.com/estore/cart.php?target=product&product_id=269&category_id=17 the United States] and [http://www.handheld-linux.com/wiki.php?page=Buzz-Rework the EU].  Please see [http://lists.openmoko.org/pipermail/community/2009-June/049106.html the mailing list announcement] for more details. The A7 model includes the Big-C rework by default. 
  
Buzz fix parties have been taking place.
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Note that the "Big C" buzz fix only fixes the internal microphone; a wired mic will still cause buzz [http://lists.openmoko.org/nabble.html#nabble-td2509041]A bluetooth headset may be one solution.
 
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There is still a problem though, as the wired mic causes buzz [http://lists.openmoko.org/nabble.html#nabble-td2509041]
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A bluetooth headset may be one solution.
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== See also ==
 
== See also ==
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* [[Neo_FreeRunner_Hardware_Issues#Poor_Audio_Quality_.28FIXED.29|Hardware Issues]] - detailed discussion of problem and solutions.
 
* [[Neo_FreeRunner_Hardware_Issues#Poor_Audio_Quality_.28FIXED.29|Hardware Issues]] - detailed discussion of problem and solutions.
 
* [http://www.handheld-linux.com/wiki.php?page=Buzz-Rework handheld-linux.com] - Providers of the GSM buzz fix in the EU.
 
* [http://www.handheld-linux.com/wiki.php?page=Buzz-Rework handheld-linux.com] - Providers of the GSM buzz fix in the EU.
*[[http://sdgsystems.com/ sdgsystems.com] - Providers of the GSM buzz fix in the United States.
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* [[http://sdgsystems.com/ sdgsystems.com] - Providers of the GSM buzz fix in the United States.
  
  

Revision as of 11:11, 5 June 2009

An annoying buzz which only the person you are talking to can hear has been an issue with the GTA02. It has been discussed in several posts on the community mailing list. One early one is here [1]. There is a fix for it, but it requires highly technical hardware skills. The file big-C_rework_SOP_rc2.pdf, which describes the soldering required to fix the buzz, can be found here [2] as can a user's post of their result, here [3].

OpenMoko has a program offering the big-C rework for owners of the model A5 and A6 FreeRunners in the United States and the EU. Please see the mailing list announcement for more details. The A7 model includes the Big-C rework by default.

Note that the "Big C" buzz fix only fixes the internal microphone; a wired mic will still cause buzz [4]. A bluetooth headset may be one solution.

See also


Personal tools

An annoying buzz which only the person you are talking to can hear has been an issue with the GTA02. It has been discussed in several posts on the community mailing list. One early one is here [1]. There is a fix for it, but it requires highly technical hardware skills. The file big-C_rework_SOP_rc2.pdf, which describes the soldering required to fix the buzz, can be found here [2] as can a user's post of their result, here [3].

OpenMoko has a program offering the big-C rework for owners of the model A5 and A6 FreeRunners in the United States and the EU. Please see the mailing list announcement for more details.

Buzz fix parties have been taking place.

There is still a problem though, as the wired mic causes buzz [4]

A bluetooth headset may be one solution.

See also