CONT Switch
This button turns the Main band (VFO-A) receiver’s CONTOUR filter on and off. When the CONTOUR Filter is activated, the peak position of the CONTOUR Filter is depicted graphically in the display.Adjustment of the CONTOUR filter’s center frequency is provided by the [CONTOUR] knob.
NOTE:
There are times, when you’re trying to remove interference with a sharp DSP filter, that the remaining signal has a somewhat unnatural sound. This is caused by the cutting of some frequency components, leaving other components in excess. The CONTOUR filter allows you (especially) to roll off certain frequency components inside the remaining passband, but in a smooth manner that helps restore a natural sound and/or raise intelligibility.
DNR Switch
This button turns the Main band (VFO-A) receiver’s Digital Noise Reduction circuit on and off. When the Digital Noise Reduction is activated, the “
” icon appears in the display. Adjustment of the Noise Reduction level is provided by the [DNR] knob.
CONTOUR DNR Knob
CONTOUR Knob
The inner [CONTOUR] knob selects the desired Main band (VFO-A) receiver’s CONTOUR filter response. The CONTOUR filter is engaged via the [CONTOUR] button.
DNR Knob
The outer [DNR] knob selects the Main band (VFO-
A)receiver’s optimum Digital Noise Reduction re- sponse. The Noise Reduction circuit is engaged via the [DNR] button.
RX Indicator/Switch
This is the button that turns the Sub (VFO-B) receiver On and Off. When this button is pressed to make the Sub (VFO-B) receiver active, the Green LED imbed- ded within the button will light up. Pressing the button again will disable this receiver, and the imbedded Green LED will turn off.
TX Indicator/Switch
This is the button that turns the Sub (VFO-B) transmitter On and Off. When this button is pressed to transfer transmitter control to the Sub (VFO-B) frequency and mode, the Red LED imbedded within the button will light up. Pressing this button once more will transfer frequency/mode control back to the Main (VFO-
A)side, and the Red LED imbedded within this button will turn off.
SUB VFO-B Knob
Depending on the status of the [A/B] button located at the right bottom of the [SUB VFO-B] knob, the [SUB VFO-B] knob is used for functions associated with the Main (VFO-A) or Sub (VFO-B) frequency control reg- isters.
(VFO-A) BAND Switch
Pressing this button allows you to select the Main (VFO-A) operating band (Amateur bands) using the [SUB VFO-B] knob.
(VFO-A) MHz Switch
Pressing this button allows you to tune the Main band (VFO-A) frequency down or up in 1 MHz increments, using the [SUB VFO-B] knob.
GRP Switch
Pressing this button allows you to select the memory group using the [SUB VFO-B] knob.
M CH Switch
Pressing this button allows you to select the memory channel using the [SUB VFO-B] knob.
(VFO-B) BAND Switch
When the [A/B] button is pressed, and the Orange lamp to the right of the [SUB VFO-B] knob lights up, pressing this button allows you to select the Sub (VFO-B) operating band (Amateur bands) using the [SUB VFO- B] knob.
(VFO-B) MHz Switch
When the [A/B] button is pressed, and the Orange lamp to the right of the [SUB VFO-B] knob lights up, pressing this button allows you to tune the Sub band (VFO-
B)frequency down or up in 1 MHz increments, using the [SUB VFO-B] knob.
FAST Switch
When the [A/B] button is pushed, and the Orange lamp to the right of the [SUB VFO-B] knob lights up, the [SUB VFO-B] knob will be controlling the Sub band (VFO-B) frequency; pressing the [FAST] button will increase the tuning rate by a factor of 10.
A/B Switch
The [A/B] button determines whether the actions of the [SUB VFO-B] knob will be applied to the Main band (VFO-A) or the Sub band (VFO-B).
Pressing this button once causes the Orange lamp to the right of the [SUB VFO-B] knob to light up; in this case, rotation of the [SUB VFO-B] knob affects operation on the Sub band (VFO-B). Pressing the [A/B] button once more causes the Orange lamp to turn off; in this instance, rotation of the [SUB VFO-B] knob affects operations associated with the Main band (VFO- A).
