Yaesu FT dx 1200 Operating Manual

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

Page 57FT D X 1200 O PERA T ING M ANUALdigitAl notch Filter (dnF) operAtionThe Digital NOTCH Filter (DNF) is an effective beat-canceling filter that can null out a number of interfering beat notesinside the receiver passband. Because this is an Auto-Notch feature, there is no adjustment knob associated with this fil-ter.A dvice :If a very strong interfering carrier is encountered, we recommend you first use the IF NOTCH filter, as it is the most ef-fective notching tool in the receiver section.1. Press the [///] button to select the “DNF”.2. Press the [SELECT] button to choose “ON”. The“DNF” will appear in the display.To disable the Digital NOTCH Filter, just repeat theabove procedure, pressing the [SELECT] button tochoose “OFF” in step 2 above. The “DNF” will turn off,confirming that the Digital NOTCH Filter is not active.digitAl noiSe reduction (dnr) operAtionThe Digital Noise Reduction (DNR) system is designed to reduce the level of random noise found on the HF and 50MHz bands, and it is especially effective during SSB operation. By setting the Menu item “110 DNR LEVEL”, any of 15different noise-reduction algorithms can be selected; each of these algorithms was created for dealing with a differentnoise profile. You will want to experiment with the DNR system to find the best setting corresponding to the noise cur-rently being experienced.1. Press the [///] button to select the “DNR”.2. Press the [SELECT] button to choose “ON”. The“DNR” will appear in the display.To disable the DNR system, just repeat the above proce-dure, pressing the [SELECT] button to choose “OFF” instep 2 above. The “DNR” will turn off, confirming thatthe DNR system is not active.[SELECT] button[SELECT] buttoninterference rejectionDNF IndicatorDNR Indicator[///] button[///] button