Icom IASDUP1035

High-Power 4-Cavity UHF Duplexer

Robust Single-Antenna Performance for Mission-Critical Repeaters

The Icom IASDUP1035 is a professional-grade 4-cavity duplexer designed for high-performance UHF repeater systems. Operating within a wide 400-512MHz frequency range, this heavy-duty component allows a repeater to transmit and receive simultaneously through a single antenna. By providing high-level isolation between the transmitter and receiver, it prevents signal interference and receiver desensitization, ensuring clear and reliable communication in professional RF environments.

Engineered for durability and high-power applications, the Icom IASDUP1035 supports up to 100 Watts of continuous power, making it an ideal choice for high-tier base stations and repeaters like the Icom CY series. With a minimum TX-RX separation requirement of only 3MHz, this duplexer offers excellent flexibility for frequency planning in congested UHF bands. Its 4-cavity architecture balances high isolation with lower insertion loss, maximizing the effective range of your repeater system.

Key Features & Benefits

High Power Handling: Rated for up to 100W, allowing for high-power repeater deployments without the risk of thermal drift or component failure.
Efficient 4-Cavity Design: Balances superior selectivity with lower insertion loss to maximize signal strength while maintaining clear separation.
Narrow Frequency Separation: Capable of maintaining high performance with a minimum TX-RX spacing of just 3MHz.
Broad UHF Coverage: Operates across the full 400-512MHz band, covering business, industrial, and public safety UHF frequencies.
Single Antenna Efficiency: Eliminates the need for dual antennas, reducing tower space requirements and lowering overall installation costs.
Professional Grade Build: Manufactured with high-quality materials to ensure 24/7 reliability in demanding base station environments.

Specifications

Brand: Icom
Model Number: IASDUP1035
Frequency Range: 400-512MHz
Power Rating: 100 Watts
Cavities: 4-Cavity Configuration
Minimum Separation: 3MHz (TX-RX)
Mounting: Base/Repeater Integrated

Compatibility

CY5300

CY6300

Frequently Asked Questions

Does this duplexer come pre-tuned? No. Duplexers must be precisely tuned to your specific assigned TX and RX frequencies. It is recommended that a qualified RF technician perform the tuning using a calibrated network analyzer.
What is the difference between a 4-cavity and a 6-cavity duplexer? A 4-cavity duplexer typically offers lower insertion loss (less signal degradation), while a 6-cavity model provides higher isolation. The IASDUP1035 is optimized for 100W power levels where efficiency is key.
Can this be used for GMRS frequencies? Yes, as long as the duplexer is professionally tuned to the specific GMRS frequency pairs, it is compatible with the 400-512MHz range.

Warranty

1-year manufacturer's warranty.