SATCOM-001-M Tiantong-1 satellite signal transponder

The Tiantong-1 satellite system is my country's independent mobile communication satellite system. It currently has three high-orbit geosynchronous satellites and supports voice calls, short messages and data transmission. The working frequency of this equipment is: uplink 1980-2010MHz, downlink 2170-2200MHz, multi-channel output. Its working principle is that the outdoor antenna quickly locks the satellite signal, and is led indoors through the coaxial cable to connect to the transponder host. After the host completes the filtering and amplification of the satellite signal, it is then connected to the indoor transmitting antenna, so that indoor wireless coverage of Tiantong satellite signals ； At the same time, indoor Tiantong terminal signals can also be received and amplified and then transferred to the outdoors and sent to Tiantong communication satellites, so that handheld phones or other Tiantong satellite terminals can transmit bidirectionally indoors to meet the use needs of different Tiantong voice and data terminals.