This professional-grade RFS/Celwave 633-6A-2N UHF 6-cavity duplexer is a must-have for any serious ham or gmrs repeater operator. With a frequency range of 450-470 MHz and a UHF band, this high-quality device is perfect for radio communication and amateur radio enthusiasts. The brand is well-known in the industry for producing high-end, reliable equipment. In addition to its impressive specs, this duplexer is part of the Ham Radio Transceivers and Ham, Amateur Radio categories, making it an ideal choice for those in the market for consumer electronics that are both functional and dependable. Whether you’re a seasoned operator or just starting out, this Celwave duplexer is sure to exceed your expectations. Used Duplexer was just pulled from a working system when they upgraded to a new P25 system. It has N connectors.