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Mark O
Posts: 153
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$19k is really too much for me as a once every other week surveyor, but I wonder what the performance improvements would be for network RTK with the older LS with RTPK?

MACORS network uses GPS and Galileo.

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Mike Shepp
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@mark-o JAVAD offers interest free financing for licensed surveyors. I took advantage of that and was able to get the equipment to more than pay for itself over the 13 month financing period.

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Nate The Surveyor
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Mark, here are 2 more guys, that are closer, but I don't know if they are active.

63 Liberty Street,Monticello,NY,12701,United States
Michael Joyce
jsma@frontiernet.net
607-426-8150

 

1283 Bear Creek Rd.,Woodgate,NY,13494,United States
Duane Frymire
dcfpls@hotmail.com
frymirelandboundaries.com
315-392-2384

Posted by: @mark-o

$19k is really too much for me as a once every other week surveyor, but I wonder

I am a 2 day a week in the field surveyor. I cannot keep up with the office work at this rate.

Now, I'm going to make a statement, that can be converted into a tool to throw me in the trash, or can explain a good product.

I have not looked through a Total Station since I got the JAVAD. I had to use a total station with the TOPCON. But, if you were willing to take the TIME, you could often get the truth. This would be 20 minutes to 1 hour. It could be done in light canopy.

Now, JUST because you have a FIX, does not mean it is giving you the truth. In canopy, you MUST have redundancy.

With Topcon, (TDS data collector) you had to MANUALLY shoot a point a number of times, over a period of time. Typically, you really wanted about 15 minutes, per shot in canopy, AT A MINIMUM. Often, an hour. You wanted 2-3 shots, with TIME SEPARATION. If you got 2 shots, within 0.12', that were 12 minutes apart, in light canopy, you were pretty good. In HEAVY canopy, that was 30 minutes to an hour. IF they did not agree, then you HAD to stay until you got enough data, to really understand that you have the shot. GPS is a STATISTICAL measuring tool. I carried a total Station often.

With the Javad, in heavy canopy, and with ONE shot, figure it could be off by 0.16', But, if you are willing to take the time, you can get 4-5 shots, within 0.12', with one of those outlying, by a few hundredths. This is an impossible number to pin down, (no pun intended) because the sat geometry is continuously in change. Over 50% of the time, a single shot is within 0.10' or 0.08'. BUT to be sure, you should get it 2-3 times, looking at shot spread.

What the JAVAD does, is it sits, and clicks, and analyzes, until it has HIGH confidence, that is NEAR 100% sure. If it is an important boundary point, get it a number of times.

I JUST got a T-3. It boosted my speed by perhaps 25% in canopy. I need to upgrade the LS to an LS +, which I plan to do soon.

ANYWAY, any statistical tool benefits by MORE DATA POINTS. Javad automates that, and runs fast in the open, and light canopy, as it gets dense, take a little more time. Think of it as LETTING your crew (in the box) chop line, and you have to wait a little while.

IF you get in a hurry, you can loose accuracy. But, Javad is great in canopy, IMHO.

Nate

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Mark O
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I hear ya Nate. I haven't pulled out a robot in well over a year. I really don't do any boundary work. I'm a PE, LSIT (but been thinking about sitting for my survey stamp). With about 5 years of RTK GNSS, I "think" I've gained enough experience to know which shots I can trust and which I can't, and will go back for redundancy as needed. The only work I do under heavy canopy is locate wetland flags, staking limit of tree cutting or limit of silt fence. I always let my clients know of the limitations. I believe I would have more confidence with the Javad and likely save some time and possibly lead to other work I hand off. 

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flyin solo
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The thing that blows me away (and, admittedly, may be possible with my other gear but the newness and necessity of setup has me seeing it on the LS+ for the first time ever) is the ability to INSTANTLY connect to the office via cloud. Couple with on screen google maps- I can have a crew on site and send them, in real time, calcs for stakeouts based on what they’ve shot, or not found, or whatever.

That i can have a cad file open at the desk and immediately pull a shot from the field, and adjust a calc and resend it before the guys could even walk to it… crazy stuff.

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