Still now, GPRS modems works quite well, because newer correction formats are very small (well packed), particularly cmrx and rtcm 3.1, 3.2. If You need antenna, then plus 10 usd. Note for EU buyers only: please mention if You have EU VAT number. Copy of invoice will be sent. The item "Trimble GSM/GPRS modem for R8 model 2, model 3, R6 900/1800 Mhz" is in sale since Wednesday, January 8, 2020.
This item is in the category "Business & Industrial\Test, Measurement & Inspection\Levels & Surveying Equipment\Total Stations & Accessories". The seller is "harlij69" and is located in Tartumaa, Estonia. This item can be shipped worldwide.