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Thread: BU-303 and SIrf

  1. #11
    Raw Wave RoyN's Avatar
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    Just to check, is it Switch to Sirf Protocol, or Switch Operation Mode that I need to click?

    The switch operation mode is greyed always....

    Does it make a difference if the gps is locked or not when I run sirfdemo?

  2. #12
    C4M
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    Is this reversible? I'm happy to try this out to see if it improves reception, but I'd like to know that I can change it back if it doesn't work well for me.

    C!
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  3. #13
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    Quote Originally Posted by C4M
    Is this reversible? I'm happy to try this out to see if it improves reception, but I'd like to know that I can change it back if it doesn't work well for me.

    C!
    I've just switched it back to sirf again to see if it makes any difference again so yeah you seem to be able to switch it back and forth as you please.
    Volvo C70 - Installation in progress *gulp*

  4. #14
    FLAC ShawJohn's Avatar
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    Yes its quite easy to switch back and forth. I noticed that the accuracy increased dramatically on my BU-303 when used in D3 in Sirf mode (2.3 & above option)
    Also the plot lag seemed lesser - it no longer appears to draw my position 20yds behind where I actually am! Also update/refresh seems a lot smoother.

    John

  5. #15
    C4M
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    I cracked open the case of my Deluo GPS reciever - it seems to be an evermore chipset, rather than the BU303 that is mentioned here, however coincidentially, the drivers that I am using from Deluo are labelled as PL2303. Conincidence, or is this relevant for me?

    Is there a compatibility list somewhere that I'm missing?

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  6. #16
    Constant Bitrate
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    Quote Originally Posted by Tuned Vitesse
    Yes its quite easy to switch back and forth. I noticed that the accuracy increased dramatically on my BU-303 when used in D3 in Sirf mode (2.3 & above option)
    Also the plot lag seemed lesser - it no longer appears to draw my position 20yds behind where I actually am! Also update/refresh seems a lot smoother.

    John
    This is still the problem with mine even in sirf mode, it plots my position about 20yds behind where I actually am.

    I was thinking its something to do with Destinator as Infomap Navigator plots my position near enough bang on when travelling over 30mph in the neam thingy protocol
    Volvo C70 - Installation in progress *gulp*

  7. #17
    FLAC ShawJohn's Avatar
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    Quote Originally Posted by corsamel
    This is still the problem with mine even in sirf mode, it plots my position about 20yds behind where I actually am.

    I was thinking its something to do with Destinator as Infomap Navigator plots my position near enough bang on when travelling over 30mph in the neam thingy protocol
    Try upping the GPS's Baud rate to 57,600 and see if that helps... Now I don't mean the port speed, altough set that at the same, you can actually set the GPS mouse's output baud rate from within SirfDemo. Set it to use the newest version of Sirf too, v2.3 IIRC

    HTH

    John

  8. #18
    Raw Wave RoyN's Avatar
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    Is there a different version of sirfdemo? I cant get it to change my gps to sirf!

  9. #19
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    There's many other programs that allows you to do this. What I used is navigator. It has a nice cool interface to it too with lots of information.

    Sirf is way better than NMEA, but NMEA is much more older and more popular around the world. It really sucks for me cause iGuidance only works in NMEA, I had to change mines from Sirf cause only destinator seems to support it.

    How much better is Sirf? let's just say, with the same exact GPS device, I was able to get locks faster and under bridges and highways. NMEA lost locks as soon as I hit a underpass.

    Damn!!! why can't iGuidance use Sirf?

  10. #20
    Raw Wave RoyN's Avatar
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    Any link for that software?

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