Not really a silly question. Maybe it's more a case of what kind of antennas might be indicative of a Fleetnet tower. I could almost always tell an old system OPP tower by the folded dipole array, in most cases eight sets of dipoles alternating at right angles, stacked one over the other. One exception was a Toronto site near the 401 that had eight dipoles on the same side of the mast (offset pattern I think).
Is there a distinctive type of antenna for Fleetnet sites?
Dave