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 * Discussing MTK receivers and Tips and Tweaks *

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T O P I C    R E V I E W
gpspassion Posted - 11 mars 2007 : 00:00:39
UPDATED MARCH 2011 : MTK chipset MT3328 (host-based version o MT3329à used on Garmin nuvi 3790.
UPDATED SEPTEMBER 2008 : MTK chipset v2 (MTK 3329) is available on the Qstarz Nano Q1300 datalogger, see details below.
The MTK chipset took the GPS world by surprise in the fall of 2006 with the arrival of Transystem's iBlue 737 when many of us had been anticipating the NemeriX NJ2020/Nx3 based iBlue 727 that remains unavailable to this day.

A quick summary for the MTK chipset would be "powerful and lean", powerful because rated and perceived sensitiviy is on par with SiRFstarIII and lean because the battery life of MTK based receivers was 3x that of SiRFstarIII receivers. However the SiRFstarIII-LT chipset has become available (on the Garmin GPS10x) and battery life is now equivalent.

Compared to the SiRFstarIII receiver it provides more accurate tracks when driving, with better resistance to multipath problems (bounced signals in urban environments), but it appears to have been tuned for driving and not pedestrian use where it has issuss getting back on track in some situations. (UPDATED 200707 : low speed tracking, not to be confused with SiRF's Static Navigation setting, fixed starting with FW1.92, now performs on par with SiRFstarIII and Skytraq, see this comparison). On average it also has a longer time to first fix in the morning on average.

- Qstarz BT-Q1300 logger with AXN_0.3-B_1.3_C01, see more

In order of appearance :
- iBlue 737/Qstarz 810
- Qstarz 815 Solar GPS
- Qstarz 818
- iBlue 747/757 Bluetooth loggers
- Holux M-1000
- Qstarz BT-Q1000 logger
- Garmin nüvi 2x0 AIO - more
- Garmin eTrex Vista HCx - more
- Qstarz Q1200 logger with v2.0 - more
- Qstarz BT-Q1000P logger with Bcore 1.1, see more
- Semsons M7 BT GPS with Bcore 1.1, see more

Please use the thread dedicated to each of these receivers to discuss their specific features.

- Q1300 (08/2008) : AXN_0.3-B_1.3_C01
- 737 (sample - 09/2006) : M-core_1.5,0000 - 1.902_23_1102_0000,0609_m0247,0001
- 737 (shipping) : Mcore_1.62,0001 - 1.902 28 1102 0001,0609
- 737 (shipping-c300k) : M-core_1.8,0001 - 1.902_0__1102_0001,0609_m0279,0001
- Qstarz 810 : Mcore_1.62,0001 - 1.902_28_1102_0001,0609_mA254,0001
- Qstarz 815 : M-core_1.51,0002 - 1.902_23_1102_0002,0609_m0247,0001
- 747 : M-core_1.8 0011 - 1.902_40_LOG1.3_1102_0017,0609_m0279,0001
- 757/ZI v1 : M-core_1.8 1388 - 1.902_40_LOG1.3_1102_5000,0609_m0279,0001
- 757/ZI v2 (>06/2007) : M-core_1.94,5202
- Polaris iBT-GPS : M-core_1.8,0001 - 1.902_40_1102_0001,0609_m0279,001
- USB GPS : 1.902_34A_1102_0006, 0609_m0269 Mcore_1.72
- Holux M1000 : Mcore_1.8,0001 - 1.902_38_B09_1100_0001,0609_m0297,0001
- Qstarz BT-Q1000 : Mcore 1.94001
- Qstarz BT-Q1200 : M-core_2.0,8300,QST1000,*64, see see review
- Gisteq Phototrackr Lite : M-core 2.0, see topic
- Qstarz BT-Q1000P : Bcore 1.1, see topic

- MTK Proprietary commands : link
- MTK chipset operating at 5hz : link
- Logging > 1Hz : link

  • BT747 Configuration , Log downloading, Google Maps creator - BT747
  • PC Configuration utility on the TS site - GPSview 1.0.3
  • PC Configuration utility on the Sparkfun site - MiniGPS 1.32
  • Activating SBAS from a PC or PPC with MTKTweak, see below
  • Sending commands over Bluetooth, seebelow
15   L A T E S T    R E P L I E S    (Newest First)
Mario. Posted - 23 janv. 2013 : 19:19:59
I hope this photo site is OK, any complaints - just send me an e-mail





Mario. Posted - 23 janv. 2013 : 19:08:47
Hello everyone (after a loong while).
Many people asked which receiver supports commands via Bluetooth.
My Holux M-1000C supports not only commands via bluetooth, I can download and set reports both via USB and Bluetooth at the same time.

Also, I am able to set 10 Hz reporting and it does exactly that. One can run on USB port, the other can run at Bluetooth port, independently.

What more, I am able to use 10-Hz recording mode.

But recently I updated firmware with some weird one and I am unable to use MtkDlut, my favourite download tool since I got the receiver.
I have to use what Mario Deveerd will offer you ;-)

I am now interested in using the precision time synchronisation and voila! Here on the PCB I can see two serial transmit and receive channels! Viva la revolucion! Wait... am I hallucinating again? Nevermind, here are the excellent photos! [[in a second]]

MTK3329, the most sensitive receiver of all so far. (The better the Signal/Noise ratio, the higher your accuracy is!)
emusic Posted - 21 mars 2012 : 08:50:05
Originally posted by joegps

after some tests with no success and the email-reply from silabs (no USB-driver for wm2003/arm availible) i stop further research.

I have LOOX 720 (Pocket PC 2003) and USB GPS dongle based on CP2104. To use them together, I have adapted SiLabs CE 5.0 VCP driver to CE 4.2, it runs on WM2003.

The driver is available here.

I understand that five years passed but some people still use WM 2003 PDAs like Loox.
mdeweerd Posted - 30 juin 2011 : 10:33:25

Hi folks,
Better late than never: I have identified the chip.
If anyone still cares, it's an AUR9801D manufactured by Auramicro Corp.
The corresponding datasheet can be found at


It was not a question of mine but interesting to know.
urbano Posted - 29 juin 2011 : 22:27:15
The Ic has the following inscriptions on it:


Does anyone know what this chip is? or even its commercial reference? or its manufacturer?

Any help, would be great appreciated.

Kind Regards

Hi folks,
Better late than never: I have identified the chip.
If anyone still cares, it's an AUR9801D manufactured by Auramicro Corp.
The corresponding datasheet can be found at

Hurston Posted - 21 mars 2011 : 10:44:57
I don't think it does. I was going to get one of those in the hope that it would support NMEA commands over bluetooth.
discord Posted - 21 mars 2011 : 06:19:16
What about the Holux M-1200E, I flipped through their manual and didnt notice anything about AGPS. Can this device support AGPS?
mdeweerd Posted - 20 mars 2011 : 09:15:31
Only Mediatek can confirm if all their MTKII devices support AGPS or not.
Another condition is that the protocol support AGPS upload. Transystem devices support it, but Holux has their own protocol. If AGPS upload is not supported in the device protocol, there is no support.
Some manufacturer may have chosen not to mention AGPS because they do not support it in their software.

BT747 can upload AGPS data to the device using the standard 'Transystem' protocol.

BT747 gets the data from Transystem and an authorisation was obtained to do so.
discord Posted - 20 mars 2011 : 03:57:20
Are all MTK v2 (MTK 3329) devices AGPS compatible? I noticed some MTK v2 (MTK 3329) based dataloggers have no mention of AGPS in their product manuals. Do 3rd party tools such as bt747 allow MTK v2 (MTK 3329) based dataloggers to upload AGPS data? Where do you aquire AGPS satellite data. I'm new to the GPS devlopments of the last 10 years.
gpspassion Posted - 12 mars 2011 : 10:07:32
The so-called "Static navigation" problem was fixed with the MTK v2 chipset so that's taken care of. Not sure about commands over Bluetooth, you could check what they have at and ask them if they can try that for you.
Hurston Posted - 12 mars 2011 : 09:22:21
Assuming that I'm not going to get the 818XT to work, is there a MTK2 bluetooth receiver that can receiver NMEA commands over bluetooth and not just USB, and also doesn't suffer from the static navigation bug mentioned elsewhere in this thread?
gpspassion Posted - 05 mars 2011 : 00:05:27
Sorry can't guess where it is either.

In other news, popej found that the Garmin nuvi 3790T uses the MT3328 MTK chipset : - the host-based version of MTK v2. First post updated.
Hurston Posted - 03 mars 2011 : 13:45:53
I've recently bought a QStarz 818XT, and like so many others in this thread, I've come across the problem that I can't send NMEA commands to the thing over bluetooth, only USB. I'd like to control it from the android app that I'm writing, so it would be nice to get this working. I've read about the resistor hack, and that is all well and good, but I'm not sure where the resistor is supposed to go on this particular board. I've taken a photo of both sides of the board, in case anyone can help me out here.

Doomsday Posted - 16 juin 2010 : 14:09:01

how to put 5Hz from Holux M-1000 ?

Thx !
mdeweerd Posted - 24 mars 2010 : 00:19:42
I think that the resistors next to that component are a solution for a connection.
There are relatively cheap oscilloscopes - I use it rarely, but it is usefull on these rare occasions to see what happens.

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