Frequency settings

The upper pair of spin-boxes set the start frequency (left) and stop frequency (right). The lower pair set the centre frequency (left) and span (right).

When a frequency is changed, the 'enter' key must be pressed or it will not be activated.

The 'Preset freq' combo-box can be used instead, to select a desired frequency band or the frequency of a fixed marker (e.g. a beacon). The bands are set to frequencies used in the UK but can be amended using the 'preferences' screen.

Additional 'presets' can be quickly added to the list by activating M1 and M2 on a chosen frequency and pressing the '+' button to the left of the combo-box. The results can be viewed and amended in 'preferences'.