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Thread: AyAy Sir Ti-GPS?

  1. #1
    Maximum Bitrate Fusion-One's Avatar
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    AyAy Sir Ti-GPS?

    I recently bought one of these and was curious if anyone has any experience with them? I searched, and there is no mention of them them, good or bad. They seem to be fairly new to the market, and from what I can see are of decent quality... I'll know when it arrives and I actually test it out, I suppose.

    They're built with the SIRF StarII / LP Xtrac 2.0 chipset, and claim that their design provides slightly better reception than even some StarIII receivers.. I could see it being because of the titanium baseplate, perhaps.. but again, when it arrives I'll see for sure.

    Specification


    ‧Sirf StarII/LP Xtrac 2.0 firmware
    ‧Weight : < 60g (Titanium cover, high rigid, Ultra light)
    ‧Update Rate : 1 Hz
    ‧Receiver : L1, C/A code.
    ‧Tracks up to 12 satellites.
    ‧Minimum Signal Tracked : less than -190 dBW (Ultra high sensitivity, even better than most other manufacturers' Star3 GPS receiver)
    ‧Dimension (LxWxH): 86 &#215; 54 &#215; 7 mm (Most slim GPS receiver in the world in year 2005)
    ‧Store Temperature : -45 ℃ ~ + 105 ℃
    ‧Antenna Type : Built in Patch Antenna
    ‧Operation Temperature : -40 ℃ ~ +90 ℃
    ‧Snap Start : < 3 sec (at < 25 minutes off period)
    ‧Operation Humidity : 5 % to 95 % No condensing
    Power Consumption : 89~90 mA( better than most other manufacturers' StarII/LP 120~160mA ) at 4.5 - 5.5V input

    Position Accuracy


    Non DGPS (Differential GPS):
    ‧Position : 5 - 25 m CEP without SA
    ‧Velocity : 0.1m / sec
    ‧Time : 1 usec sync GPS time
    DGPS (Differential GPS):
    ‧Position : 1 - 5 m, typical
    ‧Velocity : 0.05 m / sec
    EGNOS/WAAS /Beacon:
    ‧Position : < 2.2 m, horizontal 95 % of time
    < 5 m, vertical 95 % of time

    Acquisition Time


    ‧Reacquisition 0.1 sec. averaged
    ‧Hot Start 8 sec. averaged
    ‧Warm Start 38 sec. averaged
    ‧Cold Start 45 sec. averaged

    Protocol & Interface


    ‧NMEA Protocol Output :
    Baud Rate : 4800 bps
    Data Bit : 8
    Parity : N
    Stop Bit : 1
    Output Format :
    Standard : GGA, GSA, GSV, RMC
    Optional : GGL, VTG, SiRF Binary
    ‧Interface :
    1. USB, or 2. Serial port

    Dynamic Conditions


    ‧Altitude : 18,000 m ( 60,000 feet ) max
    ‧Velocity : 515 m/sec ( 700 knots ) max
    ‧Acceleration : &#177;4G, max
    ‧Jerk : 20 m/sec, max

    LED Function


    2 backup Power on steady Ultra high light Amber
    2 backup Position ready steady Ultra high light Blue




  2. #2
    Maximum Bitrate Fusion-One's Avatar
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    After testing this GPS side by side with my Delou gps for a while, I have no hesitation in saying this is the best GPS I've ever used. (Keep in mind its only the second I've used.)

    Compared to the delou, it locks from cold much more quickly, it maintains lock much better, it has a stronger lock signal on the satelites it locks onto, and typically has about twice as many locked satelites as the delou.. especially in low signal conditions.

    I brought it inside to test it out.. I wasn't expecting much, since the delou barely sees any satelites, and never locks any of them.. even when its beside the window. What happened when I connected it up nearly made me crap my pants. I got 10 satelites in view, and it connected to 7 of them!!! This is just sitting on my bedpost beside my computer desk, which is about 12 feet from the only window in the room. It wasn't open, is regular sized, and the blind was even drawn!

    I'm really impressed with this unit, the reception is terrific, it works flawlessly, even in thick urban areas.. (I couldn't test how foilage affects it, since its winter here). The build quality of the unit is great too. Solid metal construction, the size of a credit card, and a good finish.

    I have no reservations recommending this unit to anyone.




    (I thought I should specify this is a shot taken from inside my bedroom of the locks I get.)

  3. #3
    MySQL Error MatrixPC's Avatar
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    Just got one. Let see how is it compare to the Yellow Delorme Earthmate USB (NOT LT120).
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

  4. #4
    Variable Bitrate
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    I was pointed towards this thread when I posted this one here
    So matrix how did it go? I am not really excited to pay a non-refundable $25 s/h charge if the unit will not function well. And it is hard to get too excited with just one reccomendation, perhaps for example the unit he got was extraordinary. Anyway I am sure we would all appreciate any info you have.

  5. #5
    MySQL Error MatrixPC's Avatar
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    It's as good as the Delorme unit. Same number of sats. I installed both of them side by side and DEEEEPPPPP inside my "plastic" dash and inside the garage with 5/6 sat at 75% vs 80% signal strength.
    I have couple screen shot but don't have time to post yet.
    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
    89 Supra Turbo P3 600E@750/Abit BE6 II, Alpine M-BUS Car2PC.
    Y2K Accord Dell GX150
    RoadRunner is the best FE PERIOD
    EmoRebellion is a SCAMMER

  6. #6
    Variable Bitrate
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    I got one as well. Signal strength is good, but it takes forever and a day to lock onto sattelites. I am not really sure why. If you change computers would it slow it down? The reason I ask is that regular handheld GPS store the location where it was last turned on in the unit to speed up aquisition time. This unit does not seem to do that...

  7. #7
    Variable Bitrate
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    KimaX had one of these as well. I think it was a Delorme he said he had mounted near his rearview mirror and the reception was not great. This one he had in the glove compartment of his Audi! I wonder how it really compares to a SirfStar III based one, though, such as the BU353 or Holux models. Still looking at GPS receivers for my rig...
    Audio: 4 * Rainbow Audio Germs + Infinity Basslink / Case: iStarUSA S3 / CPU: C2D P8700 / MB: Jetway NC64-LF / SC: ASUS Xonar Essence STX / RAM: Crucial 2x1GB 1066MHz / HD: MTRON 2.5" 30GB / DVD: Panasonic UJ-815B / PSU: Opus 180w / LCD: Xenarc 700TSV

  8. #8
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    I had mine inside car and had 12 sats locked. So reception is excellent. The startup time was b/c mine was getting intereference I will update to see if it is faster now that I moved it.

  9. #9
    Constant Bitrate
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    Fusion-One:
    is your area fairly urban? Have you tried it in a city setting yet?
    very curious about it

    thanks

  10. #10
    Maximum Bitrate
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    I'm sure there have been a ton of threads on this, but what are the primary difference between the older Star II and Star III? Faster time to lock, better performance in city environments?

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