No, that doesn't work with human controlled JTAC ingame. I'm a JTAC for my wing and can and will use the bino's ingame together with the F10 map and, if available, a GRG (Gridded Reference Graphics) map which I make myself, based on intel of the location where I will be performing my JTAC function.
A sample of a GRG map can be found here: https://www.dropbox.com/s/xdyxauj8akz98bf/Dusheti%20100x100m%20mgrs%20rev2.pdf?dl=0
The map will allow for talk-ons using specific terrain features. We usually train talk-ons from Ingress Point, Hasty Key-hole positions and low-level pop-ups. For the last one we tend to use a smoke marker to get the A10 pilot on-target as quickly as possible.
All-in-all, using unguided munitions and no TGP is a real challenge CAS-wise, both for the pilot and JTAC.