Adtec RD-71 User Manual page 49

Active Input​ - ​ A ctive Input determines which RF Input should be actively
tuning/demodulating with the supplied parameters.
Manual LO​ - ​ A llows manual entry of the LNB Local Oscillator frequency provided that either
C: Manual or Ku: Manual is selected from the Local Oscillator pulldown menu.
Local Oscillator​ - ​ T he Local Oscillator (L.O.) control specifies the frequency of the LNB
local oscillator. The standard L.O. frequencies for "C" and "Ku" bands are 5150MHz and
10750MHz respectfully although, some other variants are included. If the desired L.O.
frequency is not listed, select either C: Manual or Ku: Manual and enter the L.O. frequency
in the Manual L.O. field.
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