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zebsogo Regular Visitor
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Joined: May 17, 2008 Posts: 108 Location: London
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Posted: Thu Jul 08, 2010 8:31 pm Post subject: A2DP Bluetooth GPS receivers for iPhone |
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Well it seems i have exhausted my googling search for an external bluetooth GPS receiver that supports A2DP. There appears to be none anywhere. if this is so why. Is it something technical im overlooking or what. I would love to be able to use my Navigon app on my iphone3G with an external GPS receiver to improve my GPS signal _________________ --
Navigon 92 Premium Live,TomTom Go 6000,Garmin 2699 LTM-D and a TomTom Go 1005 Live ( For the wife )
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peterc10 Frequent Visitor

Joined: Aug 21, 2005 Posts: 1761 Location: Kent, England
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Posted: Thu Jul 08, 2010 8:49 pm Post subject: |
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A2DP is a Bluetooth profile for transmitting and receiving stereo sound. It is used for BT stereo headphones and car kits to communicate with phones etc.. AFAIK it is irrelevant for a BT GPS receiver as it would not be able to use it anyway.
I am not sure what profile a BT GPS receiver uses - think it may be serial but others will probably be able to tell you. _________________ Peter
HTC Sensation
Sygic GPS for Europe (No more TT "support"!)
Copilot for USA
Bury CC9060 bluetooth car kit & Brodit mount |
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zebsogo Regular Visitor
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Joined: May 17, 2008 Posts: 108 Location: London
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Posted: Thu Jul 08, 2010 9:06 pm Post subject: |
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I See and understand now Thanks.
When My iphone was jailbroken i was able to use an app called "roqyBluetooth" (aka roqyBT) it is a complete bluetooth stack which takes control of the bluetooth chip in your device over the official bluetooth. i was able to use my Co-Pilot GPS receiver. But now in iOS4 i have not been able to use it Guess i will need to JB the phone when there is a JB solution out there. I hate having to JB the phone just to be able to have this simple solution of connecting an external GPS receiver. It drives my to distraction
peterc10 wrote: | A2DP is a Bluetooth profile for transmitting and receiving stereo sound. It is used for BT stereo headphones and car kits to communicate with phones etc.. AFAIK it is irrelevant for a BT GPS receiver as it would not be able to use it anyway.
I am not sure what profile a BT GPS receiver uses - think it may be serial but others will probably be able to tell you. |
_________________ --
Navigon 92 Premium Live,TomTom Go 6000,Garmin 2699 LTM-D and a TomTom Go 1005 Live ( For the wife )
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mikealder Pocket GPS Moderator


Joined: Jan 14, 2005 Posts: 19638 Location: Blackpool , Lancs
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Posted: Thu Jul 08, 2010 9:13 pm Post subject: |
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What you need is SPP (Serial Port Profile) which is available to a JB'd iFone when running the roqyBT app, the other option is the TomTom Car Kit albeit rather costly - Mike |
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zebsogo Regular Visitor
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Joined: May 17, 2008 Posts: 108 Location: London
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Posted: Thu Jul 08, 2010 9:16 pm Post subject: |
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Thanks
So the bottom line is that unless my iphone is JB i have no way of connecting an external GPS receiver except for the tomtom car kit which im unsure about, from the reviews it does not seem to improve GPS reception greatly and @ £99 is not worth the layout if it don't do the job well. I was expecting a review on the Magellan car kit. But did a search here and there does not seem to be one although it was stated there would be a review.
mikealder wrote: | What you need is SPP (Serial Port Profile) which is available to a JB'd iFone when running the roqyBT app, the other option is the TomTom Car Kit albeit rather costly - Mike |
_________________ --
Navigon 92 Premium Live,TomTom Go 6000,Garmin 2699 LTM-D and a TomTom Go 1005 Live ( For the wife )
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Darren Frequent Visitor

Joined: 11/07/2002 14:36:40 Posts: 23848 Location: Hampshire, UK
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Posted: Thu Jul 08, 2010 10:36 pm Post subject: |
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zebsogo wrote: | Thanks
So the bottom line is that unless my iphone is JB i have no way of connecting an external GPS receiver except for the tomtom car kit which im unsure about, from the reviews it does not seem to improve GPS reception greatly and @ £99 is not worth the layout if it don't do the job well. |
The TT carkit does dramatically improve reception on my 3G but not so much on my 3GS. Having said that, there does seem to be some variation in the quality of the reception on the 3GS as others have reported a poor experience with its GPS unaided whereas mine has always been quite good.
Now the iPhone4 has been released you may see some TT carkits appearing on eBay.
MikeB had a Magellan carkit but it was no better than the TT one performance wise and poorer in design and IIRC, slightly more expensive. _________________ Darren Griffin |
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mikealder Pocket GPS Moderator


Joined: Jan 14, 2005 Posts: 19638 Location: Blackpool , Lancs
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Posted: Thu Jul 08, 2010 10:51 pm Post subject: |
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zebsogo wrote: | from the reviews it does not seem to improve GPS reception greatly |
In the case of my 3G and the wife's 3GS the TT Car Kit makes a huge difference, without the car kit I would say that neither iPhone that we own is worthy of running GPS applications in the car with anything like reliability - Couple either unit to the car kit and the reception issue simply goes away - Well worth it IMHO (assuming your iPhone has poor GPS reception) - Mike |
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zebsogo Regular Visitor
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Joined: May 17, 2008 Posts: 108 Location: London
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Posted: Thu Jul 08, 2010 10:55 pm Post subject: |
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Thanks Darren and Mike for your informative and useful input on the subject.
I do now own an iPhone 4 and have to say. Im very impressed with the GPS. I can now, believe it or not. In any part of my house setup my Navigon app and plan a route and hit "start navigation" it calculates and and i'm ready to set off.. Compared to my 3Gs I would never get a signal in any part of the house I would always be offered "Simulation" mode until i was out of the house and standing still. So maybe if the iphone 4 stays sharp i won't need a solution to an external gps unit....... Cheers guys  _________________ --
Navigon 92 Premium Live,TomTom Go 6000,Garmin 2699 LTM-D and a TomTom Go 1005 Live ( For the wife )
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