What LJ is trying to say is that there are so many ROVER feeds blatting out in theatre that a detector would go off every 2 minutes - your insurgent would be constantly taking cover! Therefore, he's saying it is just as useful as monitoring an airfield for take-off and recoveries.
My spin on this is that it is a "storm in a teacup", lots of assets use ROVER feed and not just "drones" (which is an incorrect term as this applies to target aircraft - from one of the very first, the De Havilland Queen Bee). It is a known limfac and is managed accordingly until the release of the latest ROVER units to our ground forces (have a look at the L-3 website for more info
L-3 Communications -> Products & Services -> ROVER 5 Handheld) are released. There's not a lot of point encrypting the ROVER feed if no-one has the capability to receive it on the ground
The B Word