I’m having a very difficult time setting an LC29HEA up as a base station.
I was able to set up an LC29HBS and send corrections to a SNIP installation which allowed me to achieve RTK Fix on an LC29HEA. I do have a working setup, just not with the base module I wish to use.
I don’t have any logs of my module, but here is what I remember happened before I gave up and switched modules.
I followed the guide from rtklib explorer guide which I’ll directly copy here.
$PQTMRESTOREPAR13 # restore PQTM params to default and reset
$PQTMCFGRCVRMODE,W,229 # set receiver to base mode
$PQTMSAVEPAR*5A # save PQTM params to flash
manually power cycle module
$PAIR432,122 # output RTCM3 MSM7 messages
$PAIR434,124 # output RTCM3 antenna position (1005)
$PAIR062,0,010F # Enable NMEA GGA message
$PQTMCFGSVIN,W,2,0,0,x,y,z3B # set base location in XYZ coords
$PQTMSAVEPAR*5A # save PQTM params to flash
manually power cycle module
The only changes I made were to attempt a survey in. I tried several times to get it to survey in but it never seemed to finish. I found another poster somewhere that seemed to be having a similar problem, but maybe not exactly, and it seemed there was no resolution. I tried to manually input the location to the module, and I used str2str to send the data to snip caster. Snip was only able to see a few RTCM messages, just a 1005 if I remember right, but nothing capable of giving me a fix.
Does anybody have any tips on getting this set up as a base station?
The procedure is correct but you might use $PAIR382,1*2E → Test command for lock system sleep enabled $PAIR003*39 → power off GNSS system
for see if commands are received and done without errors…
$PQTMCFGSVIN,W,2,0,0,x,y,z*3B # set base location fix in ecef value, so if U have parsed coordinates
can do instead $PAIR604,1,1,latitude,longitude,height*checksum for fix in WGS84.
Survey in is not required if U done before $PQTMCFGSVIN,W,2,…but $PQTMCFGSVIN,W,1 is used…and unuseful (imho).
add $PAIR436,1*26 ==> set RTCM3.x output with satellite ephemeris
note also $PAIR432,1*22 # output still revert to RTCM3 MSM4 messages after save & reboot.
Use the STRSVR gui for see the rtcm 3 data.
data are
Thanks for the reply. I may attempt to test again tomorrow if the weather cooperates. I really will need a good survey, but I’m confused by the log and correction process. I have seen where you can log some data then provide it to a Canadian service to post process it. I think that guide was from SparkFun.
While I don’t have it bookmarked, I remember someone trying to do that with one of their Quectel module, and it was rejected for lack of L2 data if I remember correctly.
Unfortunately, nice easy to follow instructions for my feeble brain are hard to come by. I have wondered if there was a way to download some PPP? data and do the survey myself, but like I said, I’m a bit lost.
The first step should not essentially be replicated?(able to set up an LC29HBS and send corrections to a SNIP installation which allowed me to achieve RTK Fix on an LC29HEA ) and write down the coordinates of the new base.
If you use STRSVR or str2str you don’t need snip…do the survey.The difference is to log rtcm (not ubx) and convert to rinex.
The PPP method also works with L1 only (do it for final after 16 dd,), otherwise you can use rtklib’s PPP independently using final igs ephemeris&clock files.
