Atlantic Radio Duplexer Series (VHF/UHF 50W 6-Cavity) for Repeaters

Professional 6-Cavity Repeater Duplexers with Custom Tuning Maximize your repeater system efficiency by running transmit and receive paths through a single antenna. The Atlantic Radio Duplexer Series features high-performance 6-cavity RF filtering networks designed for commercial, industrial, and public safety repeater stations. This specialized series consists of the AR-DUP-VHF (operating across the 136–180 MHz VHF band) and the AR-DU-PUHF (covering the wide 380–520 MHz UHF range). Acting as a critical isolation layout, each duplexer enables a dual-frequency base station or repeater to simultaneously transmit and receive high-power signals utilizing a single coaxial feedline without degrading receiver sensitivity. This series is built for fleet technicians and wireless infrastructure engineers who need to eliminate co-site interference and receiver desensitization while avoiding the high material costs of installing multiple tower antennas. To guarantee immediate out-of-the-box functionality, professional bench tuning to your specific high and low operating frequencies is included with every purchase. Buyers must provide their exact frequency spacing requirements within the order notes at checkout so our bench technicians can calibrate the cavities for peak isolation and minimum insertion loss. Key Features & Benefits Atlantic Radio Duplexer Series Engineering: Minimizes infrastructure deployment overhead by merging cross-frequency paths onto one antenna system. High-Isolation 6-Cavity Build: Delivers superior signal suppression (greater than 75dB) to isolate active transmissions from weak incoming signals. Complementary Professional Tuning: Custom-calibrated by bench radio experts to your requested operating frequencies before shipping out. Robust 50-Watt Power Load: Confidently manages steady continuous duty cycles for standard commercial mobile and localized repeater units. Low Insertion Loss Design: Minimizes total system signal attenuation to under 1.0dB, maintaining an optimal effective radio coverage footprint. Specifications Attribute Details Brand Atlantic Radio Model/SKU ARDUP Series Product Type 6-Cavity Repeater Duplexer Frequency Options VHF: 136–180 MHz / UHF: 380–520 MHz Power Input Max 50 Watts Isolation >75 dB Insertion Loss ≤1.0 dB V.S.W.R. ≤1.5 Connector Type N-Female Nominal Impedance 50 Ω Model Variations Model Key Difference ARDUPVHF VHF Band (145–170 MHz), 6-Cavity, 50W, N-Female ARDUPUHF UHF Band (380–520 MHz), 6-Cavity, 50W, N-Female Compatibility VHF Repeaters UHF Repeaters What's Included Description SKU/Model Status 6-Cavity Duplexer Assembly AR-DUP-VHF / AR-DUP-UHF ✅ Included Professional Bench Tuning Service Custom Calibrated ✅ Included Coaxial Jumper Cables AR-RG400-N-M ❌ Sold Separately Base Station Repeater Chassis — ❌ Sold Separately More Resources Understanding the Role of Duplexers in Repeater Systems Frequently Asked Questions Do I need to tune the Atlantic Radio duplexer myself? No. Professional bench tuning to your exact high and low operating frequencies is included at no extra cost at the time of purchase. Can I use this duplexer for both VHF and UHF at the same time? No. You must select either the ARDUPVHF or ARDUPUHF model variation depending entirely on the single physical operational frequency band of your repeater hardware. What happens if I do not provide my frequencies when ordering? Your order will be placed on temporary hold. Atlantic Radio requires your exact high and low operating frequencies before shipment to ensure proper cavity calibration. Warranty 2-year manufacturer's warranty.