Might as well start with this quest, as it's nearby. On some high ground to the east, southeast you'll find an ideal spot for the receiver. Drive to a more accessible approach (south works fine) to get the Nomad up to the high ground, then turn north and drive towards the navpoint. Unfortunately, you'll encounter more than mere rocks blocking your path this time, as there's an Ancient Eiroch near the receiver site. This thing is pretty much just a Fiend with much more health than usual. Put the beast down, activate the Receiver and bring the news to Voeld.