witch LNBs are Cband, circular, KU, and so on. When I go to Lyngsat and look up Galaxy 18, there are 2 sats, 1 is G18KU and 1 is G18C, is this circular or Cband and what LNB can I use to receive the G18C sat?? Also looking to site in on G17C. Currently using A Primestar dish w/ KU only LNB sited...