Riddle me this
The latest next big thing in Ky road construction seems to be the R-turn, or J-turn intersection. Where a 2 lane road intersects a 4-lane with a median, instead of going straight across, in order to avoid driver side impact collisions, the 2 lane crossing traffic has to turn right onto the existing slow lane, cross into a new left turn lane 1000?? or so down the 4 lane to a new U-turn crossover, then proceed across to a new right turn lane on the right side back to the crossroad. We are retrofitting several into existing conditions, and new design plans already have them. I guess studies show they reduce fatalities, so we??ll see.
I had the following issue on one we have just started. There were 3 original control points on the project. We use Trimble construction GPS on equipment and grade checking. I use Access and a Trimble R-10-2 upgraded to the R-12 on the Ky VRS network. So I went out, added a couple of control points using total station to cover the site, calibrated to the 5 control points, and set a base pole by the R/W fence for them to set their base on. Done it a hundred times, Never had a problem, until now. Usually whatever base they are going to use is tied up someplace else and doesnt get to a job until they are ready to start it, thats why I use mine to get ahead of them. So they bring out the base, I plug in the base location, Get their rover going, head to check a control point, suddenly no satellites. Thinking its the antenna or a cable, swap those out, still nothing. Sitech guy brings out a new base setup, still no satellites. Hooks his rover up to VRS, no satellites. Set my R10 back on it, 20 satellites. WTF.So I set another base 1000?? up the road, 23 satellites on mine. Set various bases on it, try rovers, no satellites. Sitech updates firmware in bases and finally one of them starts getting 20 satellites. But none of the rovers would get more than 6 satellites. When it would briefly fix, could check into a control point and it was right on the money, but wouldnt maintain a fix. No radio.
There is a state police post across the road. Trimbles best guess is that they have something in there radio system thats interfering with the ability of the construction stuff to receive satellites or radio, but it doesnt affect my R10. Havent had any issues like this before, but have an airport job starting Monday and Trimble warned me the same thing may happen there.Comments?
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