Go to the Alabama listing on RRDB, then go to bottom right of page and you will see 2 drop down menus. Click on top one and then choose AL Medivac. I suggest putting in all frequencies listed for them as they use more than the one listed as base tower. Know Scottsboro(32) and Cullman(15) get traffic from Huntsville Tower. Also Huntsville Tower is point of contact for most air medics going into HH.