What is Broadcast Fax?

Facsimile broadcasting refers to a new facsimile service that broadcasts still image information such as text, graphics, and photos to fax users using broadcast waves. Sending weather maps and cloud maps by radio broadcast is the earliest fax broadcast service. It is suitable for the fax broadcast received by the three types of document fax machines. It adopts a transmission method of setting a second pair of carriers outside the band of the TV sound signal. The fax signal is modulated into multiple signals and the sound signal modulated by the carrier. The main carrier is frequency-modulated, and finally sent out through the television channel, or sends a fax broadcast signal using the television satellite broadcast data channel. ^[1]