Hands down Emlid.
If you don't mind the differences, you can go even cheaper with Polaris, but the wiser choice would still be Emlid.
After all the advice you get, you will find yourself going back to the Emlid solution.
Emlid RS2
@timd1971?ÿ I chose Polaris since it uses my own cell phone (3g, 4g or 5g), has no internal parts other than a receiver, bluetooth and a flashchip, and the cost makes it disposable. It makes for a good second order network rover (1cm), all day static receiver and one-step Rinex3 conversion for OPUS.?ÿ And since it's Taiwanese, I can tell myself, 'it's not really Chinese'.
Let us know how it goes!!?ÿ I am quite sure you got the lowest price possible for multiband GNSS besides DIY. (i.e. Emlid M2 and the additional components to make it complete).
Is there a Rtn (real time network) available? If so, there are a bunch of javad users buying new GPS base stations. Me included. If you download the javad app, onto a cell phone, your cell phone can receive the corrections from the Rtn. And, it can produce a hotspot.(WiFi). Our old gps units (Triumph 2 units) will hook up to this WiFi, and you now have a functional cm grade unit. I saw one of these used ones sell on eBay for 1k.
There are a number of surveyors who upgraded to a 4 constellation base, but still have a T-2. I'll probably sell mine. After I'm sure my t3 is sound and happy. The t2 is a 2 constellation system, with part of other Galileo, and Bideu.
Of course, there are a number of ways you can solve this. GIS does not usually demand more than 1 meter accuracy.
If you have a local surveyor, who has javad gear, it's a possibility that he can help you.
GPS is neat stuff.
Nate
