Gave the SDR a try at scanning HF. My HF reception is lousy now and i get little copyable skip. These were line of sight signals. 2/5/2016 1706z 13312 1704 calls COMCOM to report they are on a SAR case. Has COMCOM bearly readable. 1709z 8912 1704 calls COMCOM again. http://yourlisten.com/pdgls/rescue-1704 Paul, near Sacramento California