Integration of RS3 with Topcon via UHF radio

I will email support

I am curious and want to see the log that you found that logs the uhf receiving errors. Not sure where to find that in FSR files I just downloaded but I’ll look.

Yes it could be something simple I’m overlooking, there are a couple more settings I can play with on the topcon side to see if that changes anything.

OK, unzip the report somewhere and in this situation a good place to start looking for clues is this one here:
RS3-Rover_ReachRS3_[report date]_SystemReport\services-logs\ [your own current firmware version folder] \reach-radio.log


I see the bad CRC error which I think is telling me the topcon base is sending extra/wrong data
reach-radio.log (1.4 MB)
The only time I’ve tried uhf with my rs3 is with my topcon base these past days so that whole log is a good example. On jan 5 i switched to gps output only on the hiper vr and you can tell by the smaller msg the rs3 receives then I turned on glonass later.

Picture above is pocket 3D (topcons Emlid flow) setting up base constellation output.

Check the Topcon FEC setting is Off, it’s showing On in one of your screenshots above.

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Hi Conner,

I received the full system report you shared. Thank you!

It’s hard to say for sure what stands behind this issue with the UHF radio, but let’s continue investigating it. Could you please retry the setup using RTCM 3.x corrections and the TrimTalk protocol instead of TrimTalk Tx?

I will do more testing this weekend. I’m sure I already tried with the fec option off and I tried rtcm3.x option with trimtalk instead of trimtalk tx.

I will take pictures of the set up options every time I try something new to narrow down what works and what doesn’t.

Ive only tried getting corrections from my topcon base via uhf. I’ll have to see if I can get corrections via Bluetooth to see if the hiper vr base corrections even work with the rs3. And if they don’t work I know it’s a problem with the corrections not the uhf rover.

I want to try the Harxon radio with my rs3 to broadcast corrections to my topcon hiper vr rover

@E38_Survey_Solutions said I can return it if it doesn’t work. I would buy one from Emlid but I don’t think I can return it.

I’ve never set up radio or gotten a license for it. I will do more research but any advice is welcome.

Hi Conner, we went through the folks here for our FCC license, which was pretty painless and we received our licensed frequencies within about a month. We have a video and written guide on setting up the Harxon radio we sell as well as offer initial config if you provide us with your FCC license info.

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I want to keep this topic open. I should be getting my harxon radio soon from E38.

I’m getting my harxon radio tomorrow. I would like to be able to power my rs3 and send data through the 9pin lemo port. I am getting a cable like this


From @E38_Survey_Solutions. I assume the db9 on the cable is not sending power so even if I made my own 9pin data and power to db9 using Emlids CBL101Cable I still probably won’t get power. I feel like I almost need to make a my own custom 5pin (harxon port) to power to 9pin lemo (rs3 ext port) cable, or maybe someone has already done this?

If that’s not possible I have CBL102 I could connect to the harxon to send data and I could power the rs3 with usb c

Also it would be nice if I could use emlids m2 with the harxon radio. Maybe a cable like this would work?


The usb would send power to the micro usb to power the m2 and the m2 would send data to the db9. I think I would have to make sure the pin outs don’t need to be modified.

@Wombo

Can confirm harxon radio works with topcon hiper vr and topcons excavator system

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Using VSPE for m2 and harxon uhf radio


I was able to receive corrections from my hiper vr via uhf to my RS3 with the new beta. I have to use 25kHz, maybe because I have to limit the amount of satellites the hiper vr is sending. I want to use 25kHz anyways.



There is a weird bug with my harxon radio. I can send corrections using the trimtalk protocol out at 9600 rate (25kHz) but if I change the protocol to trimmark, satel, ect then go back to trimtalk I can only send at 4800 rate (12.5kHz). To fix this I have to plug the radio into my computer and use the harxon radio configuration tool software to change it back to 9600 rate.

I’ve never been able to receive glonass corrections to my hiper vr using my rs3 as a base. I’ve tried lots of different combinations of rates and legacy messages. I have been able to receive glonass corrections to my hiper sr but that rover doesn’t use Galileo or BeiDou.

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