User manual YAESU FT DX 9000D

[. . . ] FTDX9000D Operation Manual GENERAL DESCRIPTION We wish to take this opportunity to thank you for your purchase of the FT DX 9000D Transceiver!The FT DX 9000D is the culmination of a four-year design project. But it also is the product of our company's fifty years of engineering, design, and manufacturing know how. As pioneers in the development of SSB, we have led the technological advances in Amateur Radio communications over the last half century. [. . . ] FM Mode (28/50 MHz Bands) Pressing the NAR switch (# of 9 kHz. WIDTH (BW) "NAR" may be observed on the TFT ) selects a bandwidth ) selects a bandwidth NAR switch ) selects a bandwidth MAIN(VFO-A) WIDTH (BW) "NAR" may be observed on the TFT ) selects a bandwidth Advice H The bandwidth applied when the NAR switch is pressed may be adjusted using the Menu. This allows you to customize a quick-switch "Narrow" bandwidth matching your operating needs (in examples below the default setting is underlined). SSB Main (VFO-A) RX DSP 094 MAIN-SSB-NARROW 200/400/600/850/1100/1350/1500/ 1650/1800/1950/2100/2250 Hz Sub (VFO-B) RX DSP 106 SUB-SSB-NARROW 200/400/600/850/1100/1350/1500/ 1650/1800/1950/2100/2250 Hz CW Main (VFO-A) RX DSP 085 MAIN-CW-NARROW 25/50/100/200/300/400 Hz Sub (VFO-B) RX DSP 097 SUB-CW-NARROW 25/50/100/200/300/400 Hz PSK Main (VFO-A) RX DSP 088 MAIN-PSK-NARROW 25/50/100/200/300/400 Hz Sub (VFO-B) RX DSP 100 SUB-PSK-NARROW 25/50/100/200/300/400 Hz RTTY Main (VFO-A) RX DSP 91 MAIN-RTTY-NARROW 25/50/100/200/300/400 Hz Sub (VFO-B) RX DSP 103 SUB-RTTY-NARROW 25/50/100/200/300/400 Hz SUB(VFO-B) WIDTH (BW) "NAR" may be observed on the TFT Advice H When the NAR button has been pushed so as to engaged the narrow filter, the Width control will be disabled, but IF Shift still is operational. For many applications, you may find that simple adjustment of the WIDTH control, instead of engaging the Narrow filter, may be satisfactory for interference reduction. H When you press the NAR button in the FM mode, both the transmit and receive bandwidths are narrowed. Note When the NAR button is pressed, the WIDTH control no longer functions. FT DX 9000D OPERATION MANUAL Page 73 INTERFERENCE REJECTION (SIGNALS WITHIN 3 KHZ) DIGITAL NOTCH FILTER (DNF) OPERATION The Digital Notch Filter (DNF) is an effective beat-cancelling filter that can null out a number of interfering beat notes inside the receiver passband. Because this is an Auto-Notch feature, there is no adjustment knob associated with this filter. Advice If a very strong interfering carrier is encountered, we recommend you first use the IF Notch filter, as it is the most effective notching tool in the receiver section. Main (VFO-A) Band DNF Operation Press the Main (VFO-A) band's DNF switch (# ) to engage the Digital Notch filter. The LED imbedded in the switch will glow Red, to confirm that the DNF circuit is engaged. To cancel DNF operation, press the Main (VFO-A) band's DNF switch once more. The imbedded LED will go out, confirming that the Digital Notch Filter is no longer in operation. Press the Sub (VFO-B) band's RX switch (# ) to engage Dual Receive operation. Press the Sub (VFO-B) band's DNF switch (# ) to engage the Digital Notch filter. The LED imbedded in the switch will glow Red, to confirm that the DNF circuit is engaged. To cancel DNF operation, press the Sub (VFO-B) band's DNF switch once more. The imbedded LED will go out, confirming that the Digital Notch Filter is no longer in operation. MAIN(VFO-A) DNF switch SUB(VFO-B) DNF switch SUB(VFO-B) RX switch MAIN (VFO-A) SUB (VFO-B) Page 74 FT DX 9000D OPERATION MANUAL INTERFERENCE REJECTION (SIGNALS WITHIN 3 KHZ) IF NOISE BLANKER (NB) OPERATION The FT DX 9000D includes an effective IF Noise Blanker, which can significantly reduce noise caused by automotive ignition systems. Press the Main (VFO-A) band's NB switch (# ) momentarily to reduce a short pulse noise such as from switching transients, automobile ignitions and power lines. The LED imbedded in the switch will glow Red to confirm that the Narrow-NB is operating. Press and hold the Main (VFO-A) band's NB switch for two seconds to reduce a longer duration man-made pulse noise. The LED imbedded in the switch will glow Yellow to confirm that the Wide-NB is operating. Advance the Main (VFO-A) band's NB control (# ) to the point where the offending ignition noise is best reduced or eliminated. [. . . ] DATA: The VOX function will be activated by data audio input. 156. EXT AMP TX-GND Function: Enables/Disables the TX GND jack on the rear panel. Available Values: ENABLE/DISABLE Default Setting: DISABLE 160. EMERGENCY FREQ TX Function: Enables Tx/Rx operation on the Alaska Emergency Channel, 5167. 5 kHz. [. . . ]