Use whichever works best for you. The network is backwards compatible with various hardware, hence there are many answers to this question.
Typically what happens is:
- RTK_XXXX -> means single base nearest mount point
- NET_XXXX -> means VRS mount point
XXXX -> is the method of delivering your correction. It depends on your hardware. CMR+/RTCM3/MSM. Your choice… Try one, and if it doesn’t work, try another. Once it works, stick to it…
Also available, but not typically for surveying even though they work too!):
- CAN -> Canada
- AG -> Agriculture
Needless to say, no matter which you choose, the accuracy is no different. Just delivered in a different format. We typically use RTK_MSM or NET_MSM on newer receivers (GALILEO & BEIDOU) and RTK_RTCM3 or RTK_MSM on older receivers…