I have a rover set-up with the following: • Postcard + Portability Shield + Battery. • Cell phone to relay RTK Point Perfect correction to SW maps for recording data. • Postcard set for 10 Hz data collection and Bluetooth as primary for RTK. I walked the track recording discrete data points (RTK…

I was recently using SW Maps “record feature” to collect location data points. I noticed that the Bluetooth connection to the Postcard often drops out. Is there a way to make the Bluetooth connection more robust between an iPhone running SW Maps and the Postcard?

You can try removing any obstructions between them (walls, cases, etc)…on some phones you can increase the timeout settings that may help as well Is using wifi for the connection an option?

I’m using SW Maps and the iPhone is within 1-2 ft of the Postcard, no cases or obstructions. I’m not sure how to connect via wi-fi to SW Maps, it appears to only use Bluetooth. I’ll have to dig into the timeout settings. Thank you.

In other Quectel parts the equivalent to the dynamics of the u-Blox is navigation mode $PAIR080: PAIR_COMMON_SET_NAVIGATION_MODE $PAIR081: PAIR_COMMON_GET_NAVIGATION_MODE In terms of latency, best way to reduce that is keep the number of hops (MCU/UART in/out) to an absolute minimum, and to use t…

Yea,the solution is to have a dedicated port for corrections, you could use a module on the third port… As for the dynamics, I also confirm that the fix is lost during even slight changes of direction… [image] PaulZC: …it does not have a dynamic model setting… (IMHO) Quectel did not impleme…

More likely they just didn’t bother to code the tables for the tracking and navigation engines. Would make the coding and testing tasks significantly more manageable. People were doing university level projects capable of 4G, two decades ago, and only needs a 50-60 Hz tracking loop. For 20G you’d l…

Recommendations for commercially available hardware capable of tracking during dynamic events?

@Jeff_G , it might be worth trying older FW on the LG290P. It’s possible there is a snag in the current release. The same goes for RTK Everywhere. LG290P Specs say: [image] Also, it’s not impossible that ThingStream has changed something with their NTRIP delivery of their RTCM stream. My gue…

Hi everyone. With my helical antenna, I’ve always had those float changes with abrupt movements, ever since the early firmware versions of the LG290p. I actually got used to it and always tried to make the position changes slow. But it always caught my attention given the published acceleration s…

Forse dirò sciocchezze… but considering that at 144 km/h you travel for 40m in a second (similar to 1G stopped at 1s), if rtk tracks at 10 Hz (10 readings per second) 40m/10 do 4meters at each reading, here if even you go to 40Hz you have 0.4 per reading which is too much for a solution… Rtk al…

Postcard RTK: Fix instability at speed

GPS/GNSS

bamarcant July 17, 2026, 3:37am 33

Now there is 2.3.64. PQTMCFGNAVMODE
and the module is capable of rtk even at 20Hz

move the default 11 (lawn mower) to 0 or 5 and try both at 20Hz.

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Postcard RTK: Fix instability at speed

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