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  1.    #1  
    I've been using Ptunes on a Treo 650. Works great overall. In my car I use an FM xmitter to get stereo sound and have been using a 2.5 to 3.5 mm adapter I purchased at the Palm Store (looks like the one made my Sedio). I also have a built in bluetooth system in the car which integrates well with the 650; favorites show up, voice dial works, callerid is there, etc.

    The problem is when listening to music via the FM xitter and a call comes in, audio gets lost, it won't play via bluetooth or FM and the remote party is unable to hear me. What I have to do is yank the 2.5 to 3.5 adapter and then I have call audio via bluetooth. Same thing when making an call. After the call music resumes just as advertised by Ptunes.

    Has anyone seem something like this? I suspect that the adapter may be to blame (for example if there is no adapter and the music plays from 650 speaker then all is good). It seems to disable the mic completely and confuse the treo about where to send call audio. BT is connected the whole time. I appreciate in suggestions.

    Thanks, -Juan
  2. #2  
    This happens to me too. I am using a tape adapter in the tape player, plugged in to the Treo. Happpens no matter what I am listening to. Be it Real Player or Audible. It has to be something with the headphone jack.
  3. #3  
    Most likely, the impedance of whatever you are plugging into the jack is not high enough. People have fixed it by using this device:
    Cingular GSM
    Firmware:01.51 Hardware:A
  4. #4  
    Yeah, sucks, I always have my treo playing through a FM transmitter in my car too and have to unplug it when I get a call on the headset. Doesn't matter what is plugged in, it happens..
  5. #5  
    If you are handy with a soldering iron, you can hack the FM transmitter to get the Treo's internal mic to work. here is a link to the hack:

    I am also working on an internal hack to the phone. changing the value of some resistors on the board for less problematic functinality.

    I now use a charger/FM transmitter that plugs into the multi-use port on the treo and the other in the Power Source plug of a car... very cool!

    P.S. The hack may drain the batteries on your transmitter when not in use.
    Last edited by nonobeez; 04/28/2006 at 08:02 PM. Reason: Disclaimer
    .Treo Pro on Sprint Check out, Audio jack fix.
  6. #6  
    I think I need to get this... It won't help with the bluetooth headset part, but at least you can hear and speak to callers and use the stereo for tunes too..
  7.    #7  
    This is a good alternative but of course that means no bluetooth, and therefore the cool integration features withe the car are gone. Also, I don't think the coupler will work since I already have stereo sound - that is not the problem.

    Another option would be to use the audio adapter that plugs into the hotsync port:

    I think this one still allows the mic on the treo to function and is less bulky than the 2.5 mm adapters that have the mic included.

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