I connected the Ardusimple RTK2board base breakout board to PC through USB . Then I configured the base module in fixed Lat./lon. coordinate mode using UBX-CFG-TMODE3. I also enabled USB for RTCM3 msgs.1005,1074,1084,1094,1124 in UBX-CFG-VALSET window using CFG-MSGOUT-RTCM3X type1005 USB,etc. The USB is also enabled for RTCM3 message in IN & OUT protocols in CFG-USBIN/OUTPROT-RTCM3. In CFG-TMODE-MODE also,the receiver reads ‘ true’. But the U centre fix status does not show TIME MODE & also the RTCM messages are not seen in Messages-RTCM3-1005,etc. How can I resolve these so that I can send RTCM correction stream from the base module.