By adjusting the middle frequency tuning cursor in the narrowband spectrum display the user can place a signal for correct decoding. The relative distance of the middle cursor to the spectrum middle appears in the “Freq Offset” of the W-SPECTRA GUI.

Moving the middle frequency tuning cursor in the narrowband spectrum display will set the “Frequency Offset”.

The “Freq Offset” should be set, so that

Ø For HF and VHF/UHF-SUB modes, the signal appears at the right-hand side of the middle frequency tuning cursor.

Ø For VHF/UHF-DIR and SAT (satellite) mode, the middle frequency tuning cursor is placed at the middle of a signal.