Digital Optical Repeater (DOR) is an in-building or outdoor signal coverage solution that converts RF signals to digital optical signals for transmission over fiber optics between a Master Unit (MU) and Remote Units (RUs). It enables low-loss, long-distance distribution of cellular signals (2G to 5G) with high dynamic range, precise time delay management, and multi-band/multi-operator support.

Located in Guangming District Shenzhen, Shenzhen A T N J Communication is a professional RF manufacturer mainly engaged in R&D, production, manufacturing, sales, and technical services with 16 years of experience. The main products include Digital LTE/NR series repeater, SDR core board, Passive devices, Digital DAS system, and Technical solutions for Public and Private (VHF, Tetra) network base station, Wireless frequency modules. Meanwhile, we undertake OEM, ODM services and projects of various RF, wireless repeaters, multi-frequency DAS systems, remote network management center OAM, and equipment provision of indoor and outdoor signal coverage projects.
Nowadays, our digital repeaters not only reach 12 subbands simultaneously with local and remote control+monitor, but also are supplied to signal operators and Communication integrators worldwide, providing signal coverage solutions for residential areas, office buildings, supermarkets, basements and rural areas.

More mature digital band-selective repeaters were put into overseas mobile operator markets successfully. Our product field starts extending to Public Safety and Low altitude economic construction applications which include Public and Private Network Digital Multi-subband Repeater wireless signal repeater, Integrated Base Station, Civil countermeasure and phased array radar technology etc. What's more, Digital fiber multi-frequency, UHF, Tetra, VHF, Microwave frequency shift repeaters are realized. With the progress of science and technology, easier-to-use, more functional and intelligent RF products are being developed. We look forward to collaborating with you to create a brighter future together.