[Quark Elec]

QK-G022G standby current is just 52mA, Comparing with xxAH’ battery capacity. It drains very very small current. In fact, QK-G022G have been widely used on car/lorry/motorcycles/taxi for tracking and security purposes.

[Quark Elec]

Hi Martin,

To answer your questions: Are there some AIS signals or messages that this receiver is not decoding or receiving correctly?No, as long as its standard NMEA 0813 format AIS messsages, it should be decoded.
It may be that the problem is with your chart plotter, some chart plotters can’t decode all AIS messages. If you think this may be the problem we advise you to identify that using OpenCPN (free to download and use) on a laptop or android tablet to compare your results.

From the AIS log file, i can see there are at least 5 of AIS messages sent from MMSI 257587600, a few of them don’t have the vessel name (for signal reasons), but all clearly show the MMSI number as 257587600 . This is why we think it may be your plotter to see if there is a reason why it hasn’t been decoded.
Take one as an example. The message:
!AIVDM,1,1,,A,13maqT00000Ki0NShrBK4hl@0<1e,0*09
was decoded as:

Packet Type AIVDM
CHANNEL A
Message Type 1 Scheduled Position Report
Repeat Indicator Default
User ID 257587600
Navigation Status Under way using engine
Rate of Turn (ROT) Turning right at up to 708 degrees per minute or higher
Speed Over Ground (SOG)
Position Accuracy An unaugmented GNSS fix with accuracy > 10 m
Longitude 6.06551833333333 East
Latitude 62.5025216666667 North
Course Over Ground (COG) 283.5
True Heading (HDG) 26
Time Stamp 8
Reserved for regional Not available (default)
RAIM flag RAIM not in use (default)
Communication State 49261 Sync state: UTC Direct; Slot Timeout: 3 frames respectively are left until slot change; Received stations: 109
Communication Sync State Sync state: UTC Direct
Communication Slot Timeout 3 Slot Timeout: 3 frames respectively are left until slot change
Communication Sub Message 109
Communication Utc Hour No value
Communication Utc Minute No value
Communication Time Stamp No value
Communication Slot Number No value
Communication Received Stations 109
Communication Slot Offset No value

If you are still not receiving all the signals you think you should be receiving let us know.

[Quark Elec]

Thanks for your information. The A021 will not be able to show some ship manes fro the following reason. QK-A021 has a single AIS receiver which hops between the two AIS channels alternately
The vessels’ name information will be in NMEA0183 message 5, which could contain multiple sentences. When the vessels’ names are packed in multi-sentence messages, hopping between two channels can incur a loss or some parts of some messages.When that happens the names may not be correctly decoded and thus will not show. There is also the chance that a message coming from one frequency while the receiver is listening to the other may also incur losses. More vital messages like speed, position, direction, and flag are all packed in single sentence AIS messages, which avoids this loss.
Hope that helps!

[Quark Elec]

Hi Martin,

Do you have any records of this? Please send photos/screenshots of what it is you are trying to do so that we can assess what is actually happening to kit@quark-elec.com
Thanks

[Quark Elec]

The first batch product are in our stock now(see attached) and nearly ready to go.
The application can be found fromhttp://quark-elec.com/doc/QK-AS03_application_note.pdf

[Quark Elec]

The Garmin bridge kit will be released in the market in the next month. The following diagram can give you the idea how it works.Hope you will find its helpful.

[Quark Elec]

Hi Martin,
Thank you for your contribution, we love that our customers are such a resourceful crowd! We have been aware of this issue for a while and have developed a fix of our own, a bridge board which will be similar but easier to install/wire in, it’s a little late for you but other Garmin owners will be pleased to learn that we should be releasing it in May 2017.
Kit

[Quark Elec]

We are very sorry but cannot catch your question. Can you please translated to English, Thanks.

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