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Thread: 5hz GPS antenna w/USB?

  1. #21
    Variable Bitrate FPeter's Avatar
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    after the "pre-alpha-beta" version, here is the v1.0







    and its running fine in 10Hz mode - under heavy testing...
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  2. #22
    Constant Bitrate
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    Quote Originally Posted by FPeter View Post
    after the "pre-alpha-beta" version, here is the v1.0







    and its running fine in 10Hz mode - under heavy testing...
    How much are you selling that for??

    MTK chipset is way better than Sirf3 ! Glad people are finally starting to use it. I have an older MTK1 chip based GPS but it only does 9600baud on the serial port so I cant make it really work at much better than 1hz. (although it does respond to commands to change the output, including the update speed, there just isnt enough bandwidth on the serial link to crank it up)
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  3. #23
    FLAC
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    Quote Originally Posted by Extide View Post
    MTK chipset is way better than Sirf3 ! Glad people are finally starting to use it. I have an older MTK1 chip based GPS but it only does 9600baud on the serial port so I cant make it really work at much better than 1hz. (although it does respond to commands to change the output, including the update speed, there just isnt enough bandwidth on the serial link to crank it up)
    edit-

    apparently the bt-q890 is basically whats shown above. from what i can tell, MTKII just means it can do AGPS data downloads, so you can get cold start fixes in less then 15sec (so long as you download the new coordinate data every 7 days).

    so what i have should work at 5hz, i must have had port settings wrong or something. the chip inside my reciever is the same (MTK3329), so ill play around a little more to see if i cant get 5hz working. it does claim in its specs sheet that its maximum port baud is 115200 and bluetooth will not support 5hz mode.

    if you look on qstarz website, they have a bunch of nice units. this one seems like the best carpc device- http://www.qstarz.com/Products/GPS%2...T-Q1000X-F.htm

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