Description
Icom VHF Internal Duplexers 5MHz Separation
IASDUP1004 / IASDUP1005 / IASDUP1006
50W Internal VHF Duplexers
Compact Single-Antenna Solutions for VHF Repeaters
The Icom IASDUP1004/05/06 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 5MHz TX-RX separation, these duplexers offer a versatile and efficient migration path for single-site or networked repeater systems.
Key Features & Benefits
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Internal Chassis Integration: Tailored to fit directly inside the repeater housing, protecting the RF signal path and saving valuable 19-inch rack space.
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Single Antenna Efficiency: Enables full-duplex operation on one antenna, significantly reducing tower equipment costs and installation complexity.
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High-Isolation 6-Cavity Design: Provides superior rejection of transmitter noise to maintain maximum receiver sensitivity in congested RF environments.
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Vibration-Resistant Build: Rugged construction ensures stable frequency performance in both fixed station and transportable deployments.
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Broad VHF Coverage: Multiple variants available to cover the full VHF spectrum from 136MHz up to 174MHz.
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Low Insertion Loss: Engineered to maintain maximum signal strength for both incoming and outgoing transmissions.
Specifications
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Brand: Icom
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Configuration: 6-Cavity
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Connector Type: N-Connector
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Application: Internal Repeater Mounting
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Compatible Chassis: FR5300, CY5000
Variant Compatibility Guide
| Variant |
Frequency Range |
Power |
MHz |
| IASDUP1004 |
136-148MHz |
50W |
5MHz |
| IASDUP1005 |
148-160MHz |
50W |
5MHz |
| IASDUP1006 |
160-174MHz |
50W |
5MHz |
Frequently Asked Questions
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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.
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Can these handle a different frequency spread? While optimized for 5MHz, these variants are suitable for systems with a 4.2MHz to 6MHz TX-RX separation.
Warranty
1-year manufacturer's warranty.
