I was at AIRINC's Half Moon Bay, Ca receive facility not long ago and the following frequencies were dialed into receivers; 2869 3013 3413 3452 5547 5574 6673 8843 10057 11282 11342 13288 ( 2 receivers ) 13348 13354 17925 AIRINC tells me 0900t to 2100t (+ 8 hours for GMT)they normally use 8843 & 11282, 2100t to 0900t 5547 & 5574. Greg (SF Bay Area)