Some satellites broadcast in frequencies which a regular LNB (thing in front of dish antenna which receives TV signals) will not receive.
To get these additional frequencies (or more TV channels), you need the right kind of LNB.
For Ku it is called a "Wideband" or "Universal" LNB.
For C it is called an extended LNB.
Examples of the different LNB's and LNBF's (LNB is for a feedhorn on a big 8 or 10 ft. dish, LNBF is for small dishes.)
Extended
C Band LNB (3.4 - 4.2 GHz)...
http://www.mjsales.net/140194-1.htm
Regular C Band LNB (3.7-4.2 GHz)
http://www.mjsales.net/lnbhow.htm
Wideband Ku LNB (10.7-12.75 Ghz)
http://www.commsearch.com/cart/pw5000.html
Standard Ku LNB (11.7-12.2 GHz)
http://www.mjsales.net/nors1k.htm
Universal (Wideband) Ku LNBF (10.7-12.75 Ghz)
http://www.sadoun.com/Sat/Products/F...NBF/FSKU-v.htm
Standard Ku LNBF (11.7-12.25 Ghz)
http://www.sadoun.com/Sat/Products/A...vista-LNBF.htm
Regular and Wideband big dish feedhorn
http://www.chaparral.net/corotor_II_plus_wideband.html
Linear Mode
