Yaesu FT-847 Operating Manual

Also see for FT-847: Technical supplement Technical supplement Technical supplement Modification

Contents

34 FT-847 OPERATING MANUALMEM/VFO CH KNOBThe MEM/VFO CH knob on the front panel serves adual function. In the VFO mode, it allows“channelized” frequency stepping, for rapid and con-venient excursions around the band. In the Memorymode, this knob is used to select the desired memorychannel.Menu Items #3, #4, and #5 allow you to select the“Channelized VFO” steps you wish to use in the SSB/CW, AM, and FM modes, respectively.* USA version: 5 kHzAs with the settings of the frequency synthesizer stepsfor the Main and Sub Tuning Dials, the steps for theSSB/CW modes (Menu #3) and AM mode (Menu #4)may be set independently for the HF, 50 MHz, 144MHz, and 430 MHz bands. The band on which youare currently receiving will be the only band on whichthe change in frequency steps is executed.Clockwise rotation of the MEM/VFO CH knob in-creases the operating frequency. The MEM/VFO CHcontrol only affects the Main VFO. When you firstrotate the MEM/VFO CH control in the VFO mode,the frequency will “round off” to the nearest step ap-propriate for the steps in use.Note: In the Satellite mode, the MEM/VFO CH con-trol is used to select the various “SatelliteMemories,” and no “VFO” channelized opera-tion is possible.Operating TipIf the steps of the MEM/VFO CH knob appearto be twice what you set via Menu Items #3 ~#5, it is because the “Fast” mode has been acti-vated (this doubles the step size). Just press the[FAST] key to return to the originally-pro-grammed steps (the “FAST” icon will disapperfrom the LCD).OPERATIONMenu# Mode(s) Available Steps Default Steps3 SSB/CW 1/2.5/5 kHz 2.5 kHz4 AM 2.5/5/9/10/12.5/25 kHz 5 kHz5 FM 5/6.25/10/12.5/15/20/25kHzHF: 5 kHz50 MHz: 5 kHz144 MHz: 5 or 25 kHz*430 MHz: 25 kHzRECEIVER OPERATIONUP AND DWN SCANNING KEYS (MICROPHONES)The UP and DWN switches on the microphones, whenpressed momentarily, cause the frequency to be movedupward or downward, respectively, by one step. Hold-ing the UP or DWN switches in will cause scanningto occur, in the direction selected, until the switch isreleased. If the squelch is closed, the scanning willcontinue automatically (even if the UP or DWN switchis released) until a signal is encountered. See page 76for more details about scanning.MH-31B8 Hand MicUP/DWN/FST SwitchesPushing the MH-31B8’s [UP] or[DWN] switch will initiate tun-ing in an upward or downward di-rection, in frequency steps set inaccordance with the selectionmade previously for the MAINVFO Tuning Dial. Pushing the[FST] key will switch tuning intothe “Fast” mode, as though thefront panel [FAST] switch hadbeen pressed.MD-100A8X Desk MicrophoneRotary Scanning SwitchThe (optional) MD-100A8X Desk Microphone featuresa Rotary Scanning Switch at the base of the micro-phone support stand. Rotating this switch to the leftcauses the frequency to scan lower, and rotating theswitch to the right causes the frequency to scan higher.Rotating this switch fully to the left or right causes thescanning speed to switch to the “Fast” mode, as thoughyou had pushed the [FST] switch on the MH-31B8.Important Note!When connecting the MD-100A8X to the FT-847, be certain that the coiled cord from themicrophone base is connected to the transceiver!If the short “straight” cable is connected to thetransceiver instead, scanning will not be pos-sible (the “straight” cable does not include scan-ning lines, as it is intended only to pass micro-phone and PTT signals from the microphoneshaft).