Yaesu FT-991 Operating Manual

Also see for FT-991: Manual Manual Operating manual Reference book Instruction manual

Page 26FT-991 O PERA T ING M ANUALAmateur band key may similarly have up to threefrequency/mode settings applied. When [MHz] is touched, the “MHz” notationwill appear in the display, and then rotation of theCLAR/VFO-B knob will change the frequencyin 1 MHz steps.6. Press the MODE button to display the available se-lections.Touch the corresponding key to select the desiredoperating mode.A dvice : By convention in the Amateur bands, LSB isused on the 7 MHz and lower bands (with theexception of 60 meters), while USB is utilized onthe 14 MHz and higher bands. When changing modes from SSB to CW, youwill observe a frequency shift on the display.This shift represents the BFO offset between the“zero beat” frequency and the audible CW pitch(tone) you can hear (the pitch is programmed viathe Menu item “060 CW FREQ DISPLAY”), eventhough the actual tone that you hear is not chang-ing. When operating on the FM mode, repeatedlytouch [SQL] (Squelch) on the screen displayedby pressing the F(M-LIST) button to point wherethe background noise is just silenced. This is thepoint of maximum sensitivity to weak signals.Excessive advancement of [SQL] will decreasethe ability of the receiver to detect weak signals.1. Turn on the external DC power supply.2. Press and hold in the front-panel ON/OFF switchuntil the transceiver turns on. After about five sec-onds, the transceiver is ready for full operation.3. The transceiver will start up on 7.000.00 MHz LSB,(or the previously used operating frequency) andnormal operation may begin.note:To turn power off, press and hold in the front panelON/OFF switch for one second.4. Rotate the AF GAIN knob to set a comfortable au-dio level of the incoming signals or noise. Clockwiserotation of the AF GAIN knob increases the volumelevel.note:When using headphones, start by rotating the AFGAIN knob counter-clockwise, then bring the vol-ume level up after you put the headphones on. Thiswill minimize the chance of damage to your hearingcaused by an unexpectedly high audio level.5. Press the BAND button to display the list of Amateurbands on the LCD, then touch a key correspondingto the band on which you wish to begin operation.A dvice : One-touch selection of each Amateur band be-tween 1.8 and 50 MHz, 144 MHz, and 430 MHzis provided. The FT-991 utilizes a triple band-stack VFOselection technique, which permits storing up tothree favorite frequencies and modes onto eachVFO band register. For example, you may storeone frequency each on 14 MHz CW, RTTY, andUSB, then recall these frequencies by successive,momentary touches of the [14] on the screendisplayed by pressing the BAND button. EachHere is the typical start-up procedure for normal operation:ON/OFF SwitchAF GAIN KnobMain Tuning Dial KnobBAND ButtonbasiC operaTion: reCeiving on aMaTeur bandsMODE Button