Atlantic Radio Duplexer – 50 Watt – 6 Cavity – VHF (136-180MHz)
$499.00 $289.00
A professional-grade 50-watt VHF duplexer featuring a high-isolation 6-cavity design to ensure clean, interference-free repeater communications.
Build a reliable, high-performing radio repeater system with the Atlantic Radio Duplexer. Designed to handle up to 50 watts of power, this robust unit successfully isolates transmitter and receiver signals. It eliminates interference to keep your communications crystal clear.
Get maximum performance right out of the box with our complimentary custom frequency tuning service. Simply provide your high and low frequencies in the order notes during checkout. Our technical experts will professionally tune your duplexer to ensure a seamless plug-and-play installation.
Key Features:
• High-isolation 6-cavity design optimizes signal performance.
• Handles up to 50 Watts of continuous RF power.
• Pre-tuned to your specified frequencies at no extra cost.
• Built-in low-loss N-Female connectors for secure connections.
• Backed by a dependable 2-year warranty.
Compatible Devices / Use Cases:
• VHF commercial and amateur radio repeaters (136–180 MHz).
• Public safety, fleet management, and business communication setups.
• Base station configurations requiring a single-antenna interface.
Technical Specifications:
• Frequency Range: 136–180 MHz (VHF)
• Power Handling: Up to 50 Watts
• Cavity Count: 6 Cavities
• Connector Type: N-Female (NF)
• Nominal Impedance: 50 Ohms
• Warranty: 2 Years
Frequently Asked Questions
What is the purpose of a VHF duplexer?
A duplexer allows a radio transmitter and receiver to share a single antenna at the same time. By isolating the two signals, it prevents the transmitter from overpowering the receiver, allowing clear, bi-directional communication.
How do I get my duplexer tuned?
We offer free professional frequency tuning with every purchase. Please provide your exact high and low frequencies in the order notes when checking out, and our team will tune the unit before shipping it to you.
Can this duplexer handle more than 50 Watts?
This unit is rated for a maximum input power of 50 Watts. Exceeding this limit can cause overheating, damage the internal cavities, and degrade overall signal performance.
What connectors does this duplexer use?
The ARDUPVHF duplexer is equipped with standard N-Female connectors. These industry-standard connectors ensure a highly reliable, low-loss RF connection for your repeater system.
FAST & FREE SHIPPING NATIONWIDE
At Motorola Radios Dealer, we ship every order quickly and carefully from our secured U.S. warehouses. All in-stock items qualify for same business-day shipping, and orders of $150 or more ship completely free — no code needed, no minimum fuss.
SHIPPING OPTIONS & DELIVERY
- Same business-day dispatch on in-stock items, with full insurance on every shipment
- Expedited and standard delivery options available — choose what works best at checkout
Once your order ships, you'll receive a tracking number by email so you can follow your delivery in real time. For exchanges or damaged items, contact us at info@motorolaradiosdealer.com with your order number and our team will resolve it promptly.

