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Network Rover Setup with CRTN  


SurveyorJosh
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Hi All,

I have been lurking awhile and have been doing research over the last few weeks regarding obtaining some used equipment to get a network rover setup on a single free license to the California Real Time Network ( http://sopac.ucsd.edu/crtn.shtml ). We are extremely busy right now, so having a network rover setup to establish quick ground control for small sUAS surveys and other smaller projects would be very beneficial. 

I am looking at picking up a TSC2 with an R8, but I am not 100% sure what models, software type, etc. will work well with the CRTN and installing a SIM card to talk to the network. I do not want to buy a setup and find out it doesn't work as buying used will not get me any support. 

I also looked into the iG3s, as an option, but multiple rapid statics on several ground control points would not be as accurate or fast. 

Here is an example of some of the listings ive been looking at:

https://www.ebay.com/itm/Trimble-R8-Model-2-GNSS-RTK-GPS-System-with-TSC2-w-Survey-Controller-12-46/183686122750?hash=item2ac48bccfe:g:s2oAAOSwvL1b82TI:rk:2:pf:1&frcectupt=true

https://www.ebay.com/itm/Trimble-R8-Model-2-450-470-Mhz-with-TSC2-Survey-Controller-12-50-Rover-Kit-GNSS/263893804993?hash=item3d714be7c1:g:914AAOSwt7NbfZVz:rk:4:pf:1&frcectupt=true

If anyone has any suggestions on equipment, experience with the CRTN or think I am going about this in the wrong way I would greatly appreciate your two cents. 

 

Thank you,

Josh

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barnumb2
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I wouldn't suggest a TSC2.  They are not supported any more by Trimble and therefore finding replacement parts, even batteries is near impossible.  They were a great durable collector but due to technology advancements you'd be better off going with at least a TSC3 or a 7 if you want a ridiculously large screen.

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Jim Frame
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A note about CRTN:  in some areas the network is pretty dense, in others quite sparse.  If you're not working within 10km or so of a station it's not going to be practical to rely on RTK for most surveying applications.  (I've stretched out beyond 15km on occasion, but you sacrifice a lot of speed and accuracy going that far with single-base RTK.)  I advise checking the network map to make sure you have enough station coverage before investing in rover equipment.

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SurveyorJosh
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Posted by: Jim Frame

A note about CRTN:  in some areas the network is pretty dense, in others quite sparse.  If you're not working within 10km or so of a station it's not going to be practical to rely on RTK for most surveying applications.  (I've stretched out beyond 15km on occasion, but you sacrifice a lot of speed and accuracy going that far with single-base RTK.)  I advise checking the network map to make sure you have enough station coverage before investing in rover equipment.

I appreciate the post Jim.

This will mostly get used within Marin County, Sonoma County and Contra Costa County. There will be some issues with West Marin, but for the most part I think it should work out well in the areas we are working in. I just want to make sure I purchase equipment that communicates with the network and doesn't turn into a pricey paper weight. 

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Jim Frame
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Much of Marin County and pretty much all of Contra Costa County have decent coverage, but Sonoma County is a lot dicier.  The circles shown are 10km radii.

 

t

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spledeus
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No Idea about CTRN but you can run data from your cell phone to your data collector to set the correction.

I setup mine with the receiver out on the mailbox while sitting inside logged into the office wifi.

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