The SPS780 is a GPS only construction receiver that is basically the same as the old R8 GPS only from the Survey side of TrimbleYour TSC2 running Surv...

Are you using the gray USB cable from left side USB port of TSC3 to the com port of the S3?If so does the TSC3 connect to the S3 so you see HA and VA ...

this was a known issue with the RoHS compliant CIRRONET radio modules that came out around October 2007 in the TSC2. These modules were replaced unde...