Description

Icom VHF Internal Duplexers 3MHz Separation

IASDUP1001 / IASDUP1002 / IASDUP1003

50W Internal VHF Duplexers

Compact Single-Antenna Solutions for VHF Repeaters

The Icom IASDUP1001/02/03 series consists of professional-grade 6-cavity internal duplexers engineered for high-performance VHF repeater systems. These specialized RF components allow a repeater to transmit and receive simultaneously through a single antenna port, eliminating the need for dual antennas or bulky external hardware. Specifically designed for a factory-style fit within the chassis of the FR5000 and CY5300 series, these duplexers provide a clean, integrated solution for space-constrained rack environments and mobile command centers.

With a power rating of 50 Watts and a high-selectivity 6-cavity design, these units provide excellent isolation between the transmit and receive paths, preventing receiver desensitization and ensuring crisp audio quality. Each variant is optimized for a specific segment of the VHF band, providing reliable coverage across amateur, commercial, and public safety frequencies. With a standard 3MHz TX-RX separation, these duplexers offer a versatile and efficient migration path for single-site or networked repeater systems.

Key Features & Benefits

• Internal Chassis Integration: Tailored to fit directly inside the repeater housing, protecting the RF signal path and saving valuable 19-inch rack space.
• Single Antenna Efficiency: Enables full-duplex operation on one antenna, significantly reducing tower equipment costs and installation complexity.
• High-Isolation 6-Cavity Design: Provides superior rejection of transmitter noise to maintain maximum receiver sensitivity in congested RF environments.
• Vibration-Resistant Build: Rugged construction ensures stable frequency performance in both fixed station and transportable deployments.
• Broad VHF Coverage: Multiple variants available to cover the full VHF spectrum from 136MHz up to 174MHz.
• Low Insertion Loss: Engineered to maintain maximum signal strength for both incoming and outgoing transmissions.

Specifications

• Brand: Icom
• Configuration: 6-Cavity
• Connector Type: N-Connector
• Application: Internal Repeater Mounting
• Compatible Chassis: FR5000, CY5300

Variant Compatibility Guide

Frequently Asked Questions

• Are these duplexers pre-tuned? No. Duplexers must be tuned to your specific FCC-assigned TX and RX frequencies. It is recommended that a qualified technician perform the tuning using a calibrated network analyzer before installation.
• What is the benefit of an internal duplexer? It creates a highly portable, "one-box" repeater solution that is easier to deploy in the field and requires less rack space than external alternatives.

Warranty

1-year manufacturer's warranty.

Specifications

• Weight: 200gr
• Usage: Indoor & outdoor

Pros and cons

• Sustainably produced
• Ideal for everyday use
• May discolor in direct sunlight