nuts about position (cheap receiver)
(too old to reply)
Peter Monta
2018-05-11 04:50:35 UTC
Results from the Z12 in L1/L2 mode were... iffy... then the receiver died.
The teqc tool from UNAVCO can help with diagnosing iffy data. Can you put
your RINEX somewhere? With the antenna in an unobstructed area my Z12
routinely gives 1 cm-ish horizonal, few-cm 3D, using OPUS-S or OPUS-RS.

Conceivably there's some reference-clock problem with your Z12 that's
trashing the phase observables. As another check, let the unit cool to
room temp, then power up and see if it tracks.
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