John McMahan
  • Edwards, CO
  • United States
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TGO / TSC2 12.47

Started this discussion. Last reply by John McMahan Dec 21, 2011. 2 Replies

Hello again, I'm having issues with TGO not recognizing the data collector system (calibration) on import. Anyone know how to make the message "project definition and data collector definition are…Read more →

Subject Tags: import, software, TSC2, TGO

Trimmark IIe Manual

Started this discussion. Last reply by mauricio palacios Jan 2. 10 Replies

Hey All,Does anyone have a manual to one of these Trimmark IIe or know the procedure to make this boat anchor work with a 4700 base and 5800 rover? ANYTHING would be…Read more →

Subject Tags: guide, Manual, Trimmark

JD's Pacific Crest RFM96W and Trimble 5800 Woes

Started this discussion. Last reply by adriano salviano May 25, 2014. 11 Replies

Hey all, I am trying to use a RFM96W 450-470mhz to talk to a 5800 Trimble rover. I have never had any problems with any other rover from day one, 15 years ago using 4400-4400, 4400-4700, 4700-5700,…Read more →

Subject Tags: crest, pacificcrest, pacific, CREST, trimble

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mauricio palacios replied to John McMahan's discussion Trimmark IIe Manual
"you must use a software for motorola gm300,need emulate dos. explain .."
Jan 2
Peter Wayland replied to John McMahan's discussion Trimmark IIe Manual
"Looking for Trimmark IIe manual or channel/frequency table. Any help appreciated. Thanks"
Jan 2

Profile Information

Surveyor Bio:
Mostly construction surveying using GPS and Robotic
JD McSnow, LLC
I have experience with the following
GPS, topographic, construction staking, topographic surveys, control network surveys, ground movement monitoring, Equipment Sales, Construction
How many years have you been surveying?
35 years, 10 at everything I do///Haven't done it all!
Most comfortable with the following types of instrumentation
Total Stations, GPS, Surveying Software, Robotics, Automatic Levels

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