Yaesu FT-450D Operation Manual

Also see for FT-450D: Operating manual Brochure & specs Operation manual Technical supplement Manual

Contents

Page 8 FT-450D OPERATION MANUALREAR P ANEL J ACKSINPUTDC 13.8V22AANTGNDEXTSPKRCATLINEARTUNERDATADC IN JackThis is the DC power supplyconnection for the transceiver.Use the supplied DC cable toconnect directly to the car bat-tery or to a DC power supply,which must be capable of sup-plying at least 22 A @13.8VDC.ANT JackConnect your antenna here, using a type-M (PL-259) co-axial connector and 50 Ohm coaxial feedline.Warning!: High Power RF voltage is present at the TX RFsection of the transceiver while transmitting. Absolutely!Do not touch the TX RF section while transmitting.DATA JackThis 6-pin input/output jack provides receiver audio and squelch sig-nals, and accepts transmit (AFSK) audio and PTT control, from anexternal packet TNC.LINEAR JackThis 10-pin output jack pro-vides band selection data,which may be used for controlof the optional VL-1000 Solid-State Linear Amplifier.CAT JackThis 9-pin serial DB-9 jack allows ex-ternal computer control of the FT-450D. Connect a (straight) serialcable here and to the RS-232C COMport on your personal computer (noexternal interface is required).EXT SPKR JackThis 3.5-mm, 2-pin jack provides variable audio output for an externalspeaker. The audio output impedance at this jack is 4 - 16 Ohms andthe level varies according to the setting of the front panel’s [AF GAIN]knob. Inserting a plug into this jack disables the internal loudspeaker.GND TerminalFor safety and optimum performance, use this termi-nal to connect the transceiver to a good earth ground.Use a large diameter, short braided cable for makingground connections. Refer to page 12 for other notesabout proper grounding.SQL OUT FSK IN GND DATA IN DATA PTTDATA OUT TXD TX GND OUT +13.8V OUT GND TUNER SENSE TX INH IN RXD RESET OUTBAND DATA-A (LSB)TX GND OUT+13.8V OUTTXREQ INGNDBAND DATA-B BAND DATA-CBAND DATA-D (MSB)TX INH INEXT ALC INCTS RTSGNDSERIAL INSERIAL OUTConnect to Connect to N/A Connect to TUNER JackThis 8-pin jack is used for Connection tothe FC-40 External Automatic AntennaTuner.COOLING FANTurns at low speed in receive mode.Turns at high speed when the temperature begins torise or in transmit mode.(viewed from rear panel)(viewed from rear panel)(viewed from rear panel)(viewed from rear panel)(viewed from rear panel)+-