Yaesu FT-847 Operating Manual

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

Contents

91FT-847 OPERATING MANUALThe FT-847’s CAT System allows the transceiver tobe controlled by a personal computer. This allowsmultiple control operations to be fully automated as asingle mouse click, or it allows a third-party softwarepackage (such as contest logging software) to com-municate with the FT-847 without (redundant) opera-tor intervention.The FT-847 has a built-in level converter, allowingdirect connection from the rear panel CAT jack tothe serial port of your computer, without the need foran external RS-232C level converter box.You will need a serial cable for connection to the (RS-232C) COM port of your computer. Purchase or con-struct a “null modem” type serial cable (not a “straight”type), ensuring it has the correct gender and numberof pins for connection to your system. Note that thiscable is different from the type utilized on earlier YaesuCAT System transceivers.CAT (COMPUTER AIDED TRANSCEIVER) SYSTEM PROGRAMMINGYaesu Musen does not produce CAT System operat-ing software, due to the wide variety of personal com-puters, operating systems, and applications in use to-day. However, the FT-847 (and other Yaesu products)are widely supported by third-party software packages,and we recommend that you contact your dealer foradvice, or check advertisements in amateur radio jour-nals. Most software vendors also have Home Pageson the World Wide Web which contain a wealth ofinformation on the features and radio support for theirsoftware packages.The information presented in this section will allowthe programmer to understand the command structureand opcodes used in the FT-847’s CAT System.Important Notice!It is not possible to engage the CAT Systemwhen the FC-20 Automatic Antenna Tuner isin use.Please disconnect the FC-20 Control Cablefrom the TUNER jack on the rear panel of theFT-847 prior to commencing CAT System con-trol of the FT-847.