On the technical capabilities I'm short on knowledge. There are more than a few people on FR that follow these things very closely, or have real experience to share. I'm not one of them.
In addition to your question, I notice in #93 you posted the story about the missile being laser guided, and while I too suspect that's what was used, I wouldn't be too quick to take that PR flak, General Sultan's, word for it just yet. The Predator UAV can carry either the AGM-114K, Hellfire II missile, which is laser guided or it can carry the new AGM-114L, Longbow Hellfire, which is millimeter wave (radio signal) guided. The millimeter wave seeker section is extremely versatile on the 114L and could very likely target the transmissions from a sat phone.
--Boot Hill