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larry-scott
larry-scott
@larry-scott
Member
Joined: May 28, 2014 10:48 pm
Last seen: April 9, 2026 5:20 pm
Topics: 61 / Replies: 998
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RE: Most Interesting Field Finds?

@holy-cow So has this find been neutralized??ÿ

4 years ago
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RE: Most Interesting Field Finds?

Is the mortar shell an explosive shell? If so has it been neutralized??ÿ

4 years ago
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RE: Curious ashtech data set

@olemanriver Mr Ashtech aka Javad Ashjaee. I still use my T3 and T2 and HP3805 quite a bit. Along with Z-XII. And I got hold of these lovely reflecto...

4 years ago
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RE: Curious ashtech data set

@olemanriver Funny thing. Back in the Trimble SL/SST/SSI days, Trimble and Ashtech was the classic feud. Today however the siftware for Ashtech is GNS...

4 years ago
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RE: Curious ashtech data set

@olemanriver I cut my teeth on 4000SL, 5 channel, L1, only baseline processing on a 286 with a mathco. Downloaded to 5 in floppies. 4-5 observation wi...

4 years ago
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RE: Curious ashtech data set

@olemanriver I have 2 Z-XII with matching whopper geodetic antenna. They ARE bullet proof. And 2 ZSurveyor with geodetic antenna. (Easily $100K for th...

4 years ago
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RE: Curious ashtech data set

And if youƒ??re looking to sell it, let me know. Itƒ??s in my workflow.?ÿ

4 years ago
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RE: Curious ashtech data set

Hereƒ??s ZExtreme week rollover fixed firmware from member: robots. If you have the cable and receiver upload software, Iƒ??ve used this firmware succ...

4 years ago
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RE: Curious ashtech data set

my Z12 revivers report date (gps week number) 1024 weeks behind. So, convert to rinex and you can edit the date with search and replace. Teqc also has...

4 years ago
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RE: MSL height difference with different brands

@bill93?ÿ As I recall NGVD not being explicitly tied to ƒ??sea levelƒ?? is because as sea levels vary sea level would always be zero. So howƒ??d you ...

5 years ago
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RE: MSL height difference with different brands

EGM96? Thatƒ??s been superseded. Include observations on orthometric BM and solve for rotations in least squares. IMO. Thatƒ??s how I did it back the...

5 years ago
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RE: Old school skills

@northernsurveyor?ÿ precise chaining. Iƒ??m jealous. I bought a K&E 100ƒ?? invar base tape, and calibrated my SuperHiway chains. (I always call t...

5 years ago
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RE: Old school skills

@oldpacer?ÿ I have a cogo program for 41. Original and iPhone emulator. Dates back to about 1988. Took about 8 mag cards to load. 100 point data base...

5 years ago
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RE: Old school skills

I got 8 yes. 8 no. Avoiding autocad regen made me laugh. A definite YES GPS at night in the winter, day in the summer was not an option. Summers wer...

5 years ago
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RE: Gps on BM

@bill93?ÿ Yeah, USGS leveling isnƒ??t primary control.?ÿ

5 years ago
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RE: Gps on BM

@bill93?ÿso, choose wisely. Old BM leveling lines. What needs to accompany the observation is reliable description of the HI, and condition of the mar...

5 years ago
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RE: Gps on BM

I pinged NGS specifically asking if 2 hrs Z-XII is acceptable?ÿ

5 years ago
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RE: Gps on BM

@mightymoe?ÿ I believe itƒ??ll be incorporated regardless of the wish list.?ÿ

5 years ago
Topic
5 years ago
Replies: 31
Views: 767
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RE: The role of GPS in surveying

@va-ls-2867?ÿ If something does go wrong, and the fingers pointing requires showing that itƒ??s not your fault, yeah conventional checks is piece of ...

5 years ago
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