T-2 will not get a fixed solution

[Bill Colisch]

I have had my T-2 for a couple of years & it has worked GREAT! But it has stopped getting any fixed solutions & I can't figure out why.
I am running JMT ver 4.2 & my T-2 has firmware 3.6.15 Feb,05,2019
I sent Yuri some files & he suggested I try here.
I am getting the corrections okay (Ntr 100%, 1s), 8+4 satellites, 1.6 PDOP, Float solution 0.04' but it just won't get a fixed solution.
I am in Oregon using the ODOT RTN (the same as what has worked well in the past) & have tried different mount points.

ANY suggestions would be greatly appreciated!

 

[Bill Colisch]

Okay, just to make things more interesting, while testing it for this thread it got a couple of fixed solutions - not enough to get a verified solution (3x10sec), but it did fix.

 

[Yuri Noyanov]

The main recommendation is to check that extrapolation mode is set (not delay). Try turn on Multi RTK, that increase percentage of fixing. Play with elevation mask - increase or decrease it. It is difficult for me to say about a reason of fixing problem. Could you record a raw jps file in JMobile with included base corrections (go to RTK Rover | click File button set on Receiver File Logging check mark and Store Base correction check mark | start rover and wait 10-20 minutes till RTK works.) Then download the file and send there. I will provide it to RTK group to analyse it.