This suggestion is mostly for the VarAC FM. This could be a Long-term feature as it will take time if developer decides to pursue. I suggest to check D-Rats (which is also a Ham Radio chat application). One of the features of D-Rats is the mapping of connected stations positions. Please see attachment. The capture only shows mine as I have done limited testing and no other station was actives.
For EMCOMM, GPS is key in many situations, particularly when mobile. Just might help in some situations.