Atlantic Radio Duplexer – 50 Watt – 6 Cavity – UHF (380-520MHz)

Maximize the efficiency of your two-way radio network with the Atlantic Radio Duplexer. Designed for the 380-520MHz frequency range, this essential component allows your repeater to transmit and receive simultaneously using just one antenna.

By providing over 75dB of isolation, this 6-cavity unit prevents transmitter desense and ensures crystal-clear audio. It safely handles up to 50 watts of power, making it highly reliable for continuous 24/7 commercial duty cycles.

We include professional custom tuning with every purchase at no extra cost. Simply provide your specific high and low frequencies at checkout, and we will calibrate the unit for peak performance right out of the box.

Built with rugged, temperature-stable materials, this duplexer prevents frequency drift during extended use. Backed by a comprehensive 2-year warranty, it is a cost-effective upgrade for any GMRS, Ham, or LMR repeater setup.

Key Features:
• 6-Cavity Design: Delivers >75dB isolation to prevent receiver desense and signal interference.
• Broad UHF Coverage: Operates seamlessly across the 380–520MHz band for versatile applications.
• 50-Watt Power Handling: Built to support high-power mid-range repeaters without signal degradation.
• Free Custom Tuning: Professionally calibrated to your exact TX and RX frequencies before shipping.
• N-Female Connectors: Industry-standard ports ensure secure, low-loss connections to your feedlines.

Compatible Devices / Use Cases:
• Commercial LMR (Land Mobile Radio) repeater systems
• GMRS (General Mobile Radio Service) base stations
• Amateur (Ham) radio 70cm band repeater setups
• Public safety and emergency response communication networks

Technical Specifications:
• Frequency Range: 380–520 MHz
• Maximum Power Input: 50 Watts
• Cavity Configuration: 6 Cavity
• Isolation / Suppression: >75 dB
• Insertion Loss: ≤1.0 dB
• Frequency Spacing: 5 MHz to 10 MHz
• VSWR: ≤1.5
• Nominal Impedance: 50 Ohms
• Connector Type: N-Female
• Dimensions: 225 x 190 x 37 mm
• Weight: 1.7 kg (3.74 lbs)

Frequently Asked Questions

What is the main benefit of using a 6-cavity duplexer over a 4-cavity model?

A 6-cavity duplexer provides significantly higher isolation, typically exceeding 75dB. This superior rejection ensures your transmitter does not blind or desense the receiver, resulting in clearer audio and extended repeater range.

Do I need to provide my frequencies when ordering?

Yes, to ensure optimal performance, we include free custom tuning with your purchase. Please include your specific transmit (high) and receive (low) frequencies in the order notes so we can calibrate the unit before shipping.

Can this duplexer be used for GMRS and Ham radio repeaters?

Absolutely. Because it covers the broad 380–520MHz UHF spectrum, it is perfectly suited for GMRS base stations, amateur 70cm band repeaters, and standard commercial LMR setups operating within this range.

What type of connectors does this UHF duplexer use?

This unit features standard N-Female connectors. These industry-standard ports are specifically chosen for UHF frequencies to provide a robust, secure connection with minimal signal insertion loss.