Yaesu FT dx 1200 Operating Manual

Also see for FT DX 1200: Operation manual Operating manual Operating manual

Page 55FT D X 1200 O PERA T ING M ANUALoperAting ModeSSBCWRTTY/DATAAMFM (28/50 MHz Bands )interference rejectionnArrow (nAr) one -touch iF Filter SelectionPressing the [NAR] button provides one-touch, mode-specific, selection of a narrow IF DSP filter setting that does notrequire resetting the [WIDTH] knob.Pressing the [NAR] button once more returns the band-width control to the WIDTH/SHIFT system. The factorydefault bandwidths are:: Depends on the [WIDTH] knob( ): Default Bandwidth“on”200 Hz ~ 1.8 kHz(1.8 kHz)50 ~ 500 Hz(500 Hz)50 ~ 500 Hz(500 Hz)6 kHz9 kHz“oFF”1.8 ~ 4.0 kHz(2.4 kHz)500 Hz ~ 2.4 kHz(2.4 kHz)500 Hz ~ 2.4 kHz(2.4 kHz)6 kHz9 kHz[nAr] SwitchA dvice : When the narrow bandwidth is selected, the “NAR”icon will appear in the display. If the [NAR] button has been pressed to engagethe narrow filter, you may still adjust the narrow IFbandwidth by rotating the [WIDTH] knob. The IFSHIFT is also operational. For many applications,you may find that simply pressing the [NAR] buttoninstead of adjustment of the [WIDTH] knob, may besatisfactory for interference reduction. When you press the [NAR] button in the FM mode,both transmit and receive bandwidths are narrowed.[NAR] Buttonwidth indicAtor