Huawei ME909u-521: unable to get GPS data

Yegor Yefremov yegorslists at
Mon Jun 2 05:42:10 PDT 2014

On Sat, May 31, 2014 at 12:46 AM, Yegor Yefremov
<yegorslists at> wrote:
> On Fri, May 30, 2014 at 1:33 PM, Aleksander Morgado
> <aleksander at> wrote:
>> On 29/05/14 21:55, Yegor Yefremov wrote:
>>>>> Has anyone experience with this LTE card? "GSM" stuff is working, but
>>>>> >> I can't get GPS, i.e. if I issue "AT^WPDGP" like shown here
>>>>> >>,
>>>>> >> I get NMEA data on /dev/ttyUSB3, but it's empty even after several
>>>>> >> minutes:
>>>>> >>
>>>>> >> $GPVTG,,T,,M,,N,,K,N*2C
>>>>> >> $GPGSA,A,1,,,,,,,,,,,,,,,*1E
>>>>> >> $GPGGA,,,,,,0,,,,,,,,*66
>>>>> >> $GPRMC,,V,,,,,,,,,,N*53
>>>> >
>>>> > It can take a long time to get a fix without A-GPS, which may or may not
>>>> > be active here.  The first thing I would do is wait longer (10 minutes?)
>>>> > before giving up.  Also, are you able to test the same device under
>>>> > Windows, to see if the GPS there actually works and to establish a
>>>> > baseline for time-to-fix?
>>> I was also going to try Windows driver. I hope I will be able to find them.
>>> Getting a fix is another question, but I should at least see some
>>> satellites after relative short period of time. Other cards, like
>>> Sierra or Ericsson see some satellites at once.
>> Also, make sure you've connected the antenna to the proper connector, in
>> case it has multiple of them.
> According to Huawei's manual
> (
> GPS is in the middle. The question is, whether it is for active or
> passive GPS antenna. So far I have tried the active GPS  antenna on
> the dedicated GPS connector and passive antenna on the auxiliary one,
> but without success. Perhaps GPS connector is for passive antenna?
> Would try this.
> The card doesn't seem to support Windows.

I connected a passive antenna to the dedicated GPS connector and GPS
started to work at once. So no active antenna support :-(


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