为了满足人们随时随地对传真业务的需要，车载传真机应运而生。车载传真机需要一台超短波无线电台，与基地台的超短波电台进行联络。基地台可以是固定的，也可以同样是活动安装在车上的车载传真机。由于汽车上没有交流电，普通的传真机显然不能用作车载传真机，车载传真机所需? In order to meet people’s needs for fax business anytime, anywhere, on-board fax machines came into being. Car fax machines need an ultrashortwave radio station, and base station FM radio contact. Base station can be fixed, it can also be the same activities installed in the car’s car fax machine. Since there is no AC power in the car, plain fax machines obviously can not be used as in-car fax machines and in-car fax machines.