No RTK correction source, no RTK transmision,
no precision.


Precision Agriculture
is the best way to be profitable.


The right reason, why Precision Agriculture.


Envoy RTK modems



The position obtained from the GNSS system is corrected by using the RTK correction signal ( the difference in between the right truth position and the position obtained from the GPS system). Base Station or VRS is to give GPS unit the information about the correct position.  Then to provide ( transmit) this RTK correction through  RTK modems  to the GPS receivers, featured with ability to receive RTK correction signal.


The basic functions :

Using two GSM SIM cards ( two different mobile operators) in the one RTK modem. When one ( which was present at the previous moment), fails ( 2G/3G/4G -LTE), the very second one has to be switched on and start to work properly in 1-2 seconds. This time is short enough that the automatic steering system does not fail to work properly.


+ Data and basic parameters remote acces ( playback, record and managing).

+Diagnostics reports ( GSM/ VRS communication, Head unit messages).

+ Diagnostics reports ( GSM/ VRS communication, Head unit messages).

+ Modem communication protocol TCP, FTP and UDP

+ GSM Quand band 850/900/1800/1900 Mhz

+ Communication via CANBUS

The transmission correction – description ( RTKM D unit - input/output description ):