- Weight: 1.04 pounds
Qstarz BT-Q818XT 10Hz 66 Channel Bluetooth GPS Receiver
This item at this price, sold by Amazon.com, is currently reserved exclusively for Prime members.Prime free trial and invitee customers: We will automatically apply an Amazon.com Gift Card to your Gift Card Balance in the amount equal to the Prime exclusive discount after you become a paid Prime member. If you cancel your paid Prime membership or return the qualifying smartphone within the first 3 months of your paid Prime membership, we may void your Gift Card or charge you in the amount of the Gift Card. Terms and Conditions apply.
Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and .
If you're a seller, Fulfillment by Amazon can help you increase your sales. We invite you to learn more about Fulfillment by Amazon .
- See picture for information
- Not compatible with any generation iPad, iPhone, and iPod Touch
Frequently bought together
Customers who bought this item also bought
Qstarz BT-Q818XT is more than just a Bluetooth GPS receiver? Yes, it is enhanced with outstanding 10Hz feature, which is excellent for high speed racing requirement. 3-level switch to easily switch to 10Hz high speed more or 1Hz normal speed mode.
Top Customer Reviews
I am very happy with this product.
Many of the reviews on this product come from people who have not compared it to alternativse you might be considering.
We use this for a business application, and for that reason, I've researched/tested all of the Bluetooth GPS receivers that I can find.
One key thing to know when buying, do your research on the type of GPS chip. Like so many electronics these days, there may be hundreds of variations, but you only have a few core technologies below them. This unit uses the MTK II chipset, which is arguably the best chipset going, for a non-integrated GPS. In other words, there is one unique piece of hardware as of this writing, the Galaxy S2 phone, which has a more modern chip with some very unique features and power-saving technology; however, that chip is not practical to use in this type of GPS receiver and for that reason, a competitive solution with that chip (SiRFstarIV) will not likely be offered for sale.
We've been using this model for about 14 months with great results. I'll list the reason we found it superior to other solutions:
1. Optional 1,2,3,4,5,10 Hz updates. In other words, you can choose to receive GPS updates from 1 to 10 times per second. If you've ever passed a turn because your GPS was 50-feet behind your location, you understand how important high-frequency updates can be. Using a smart-phone, you are limited to one update per second (at best). The reason for this, GPS polling is very tough on battery life. The 1/second option will save battery life if you don't need a more finite resolution.
One note on this feature. While you have the option of 1,2,3,4,5,10, only two options are available from the physical switch. You have to connct to the unit via software and change its configuration if you want to use 5 versus 10, for example. The physical switch on the unit only allows you to toggle between 1 and the alternative setting.
2. This unit receives a very quick lock, so that the time from power-on, to the first GPS coordinate, is very quick. I can't give you an exact number because the results will vary a tremendous amount by a number of reasons beyond the scope of this review. What I can tell you is that it should be less than 30 seconds, and relatively speaking, it will often be 30% or better than alternative chipsets.
3. This unit can track 66 channels at once, giving you more reliable/resilient GPS service.
4. This unit is very accurate. However, I have seen tests that show certain conditions where the SiRFstar III chipset (the most popular high performance chipset) can be more accurate than this unit. With that said, in my real-world experience, this is a very accurage GPS and has performed better than the alternatives.
5. Lithium Battery or standard Mini-USB. Fortunately you won't have to get a proprietary connector to keep this charged. A standard Mini-USB is used for charging or for updating this unit via your PC. You can also go cordless, and in our experience the Lithium battery that is included is superior to many other options. It's a very high-quality battery, not an afterthought.
A few reasons we choose to use an external GPS, which may benefit you:
With the exception of the Nexus Galaxy S2, the GPS functionality of a smartphone consumes a huge amount of battery power. Removing that provides a much longer battery life. Our phones will run roughly 3 hours of straight usage without GPS, or 1 to 1.5 hours when using the GPS with a 1/second update, it's a significant difference.
GPS need sky-exposure. As you have buildings or clouds, this need increases. A phone is typically not held in the best location to receive good GPS service. On the other hand, this unit can be placed along the front-interior edge of the windshield and consistently provide much better GPS results.
Frequency of updates. Mentioned above, this devices provides a tremendously fast GPS update, 10 times per second. It's often used by people tracking their race-times. This alone is one of the best features of this unit versus so many others, particularly when compared to a 1/sec smartphone.
I hope some of this research will benefit others, best of luck!
You do need to JB an ipad to use with it though, unlike a couple other models. The Hz switch is good too.
But beware of the seller here, DBROTH, because they will ship you a different model instead. I ordered twice from them and both times they shipped a different unit and now Im stuck without anything for my weekend trip.
GPS unit is 3 Stars, pretty decent. Seller DBROTH is 0 stars. Just look at their reviews and you'll see they have a history of this little scam. I warned you...
Contrary to what one reviewer said, it is the 1 Hz switch position that gets programmed via the software, not the 10 Hz position. The 10 Hz switch position always gives 10 Hz.
Be aware that the 10 Hz position disables differential GPS, i.e., WAAS. You get faster update but each measurement is less accurate. For small intervals of time, presumably the WAAS correction does not change much so that tends to offset that issue if all you are looking for is changes, not absolute values. This characteristic is true of many GPS chips out there, so (as nearly as I can tell) don't bother looking for one that has WAAS at 10 Hz. This unit is definitely state of the art in small, portable, Bluetooth, long-battery life, high update rate, GPS receivers.
The GPSView software has a nice feature that, in addition to setting the update rate for the 1 Hz switch position, allows you to select how often *individual* sentences are transmitted. For example, by setting RMC to 1 and GSA to 5, with a 3 Hz update rate, you get 1 GSA sentence for every 5 RMC sentences (a big backwards intuitively), with the RMC sentences at the 3 Hz rate. 5 is as high as you can go. You can also turn off individual sentences by setting the value to 0. This is very handy for reducing the transmission bandwidth to just what you need.