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Receive filter operation prior to firmware v 1.79b02:
The G90/S has two filter adjustment modes: center frequency point mode and
bandwidth mode.
1. Press the [Multi-function] knob momentarily to switch between the two filter
modes.
2. When the center frequency point mode is selected: The prompt text "Cxxx"
appears over the filter icon ("xxx" refers to the center frequency point value) and
a green vertical line displays on the orange trapezoidal shape.
3. When the bandwidth mode is selected: The prompt text "Bxxx" appears over
the filter icon ("xxx" refers to the bandwidth value) and a green vertical line
displays on the both sides of orange trapezoid.
4. When either the center frequency point mode or the bandwidth mode is
selected, rotating the [Multi-function] knob adjusts the values.
Note: Press the multi-function button in once before adjusting by turning the
multi-function knob and press the multi-function knob in again once the change
is complete, to store the setting. (the vertical green bars go off once the setting
is stored).
How to adjust the low and high cut-off frequencies of the filter:
1. Press the [FUNC] button momentarily to enable the operation of alternate
button functions.
2. Either press the [CMP/F-L] or [NB/F-H] button and rotate the main tuning
knob to adjust the lower or upper cut-off frequencies of the filter. Press the
[CMP/F-L] or [NB/F-H] button again momentarily to display the currently set
bandwidth values in the function display area of the screen. 200/2750 is a good
starting point for SSB operation.
F-L: Adjust the low-end cutoff frequency of the filter
F-H: Adjust the high-end cutoff frequency of the filter
Method to reset to the default filter parameters:
1. Press the [FUNC] button momentarily to enable the operation of the alternate
button functions.
2. Long press the [CMP/F-L] or [NB/F-H] button to reset the upper or lower cutoff
frequencies of the filter to their default values.
In the Center frequency mode (see above) you can move the center of the
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