Description

Icom VHF and UHF Pre-Selector

4-Cavity Internal RX Pre-Selector

Specialized RF Interference Mitigation for Digital Repeaters

The Icom VHF and UHF Pre-Selector series is a critical hardware upgrade designed for high-performance repeaters operating in RF-congested environments. These internally mounted 4-cavity filters provide a narrow bandpass at the receiver’s front end, effectively stripping away unwanted out-of-band signals and interference before they can desensitize the radio’s receiver. By installing an Icom VHF and UHF Pre-Selector, network administrators can significantly improve receiver sensitivity and overall range in areas plagued by strong nearby transmitters, broadcast towers, or other collocated radio equipment.

Each 4-cavity module is precision-engineered to maintain low insertion loss while providing steep attenuation of off-frequency noise. These pre-selectors are designed to be mounted internally, maintaining a clean and professional setup within the repeater chassis. Whether deploying a VHF or UHF system, the integration of an Icom VHF and UHF Pre-Selector ensures that your communication infrastructure delivers the maximum possible "clean" signal, which is essential for the high-integrity data and voice requirements of IDAS digital networks.

Choose Your Purchasing Option

• IASPR1001 (VHF 136–150MHz): Optimized for lower VHF band operations. Requires assembly kit for installation in FR5300.
• IASPR1002 (VHF 150–174MHz): Optimized for higher VHF band operations. Requires assembly kit for installation in FR5300.
• IASPR1010 (UHF 400–440MHz): Optimized for UHF band operations. Requires assembly kit for installation in FR6300.

Key Features & Benefits

• 4-Cavity Precision Filtering: Provides a highly selective bandpass to block off-frequency interference and improve signal-to-noise ratios.
• Enhanced Receiver Sensitivity: Prevents "receiver desense" caused by strong nearby signals, ensuring small portable radios are heard clearly over long distances.
• Internal Chassis Mounting: Specifically designed to fit within the Icom repeater housing for a streamlined and secure professional installation.
• Frequency-Specific Optimization: Available in three distinct bands to provide the exact filtering required for your specific license or coordination.
• Industrial Durability: Built with high-grade internal components to handle continuous-duty operation without thermal drift or performance degradation.
• Mission-Critical Reliability: Recommended for any site collocated with paging systems, broadcast FM, or other high-power RF sources.

Specifications

Compatibility

What's Included

Recommended Accessories

• Icom VHF Digital Repeater (FR5300)
• Icom UHF Digital Repeater (FR6300)
  

Frequently Asked Questions

Do I need an assembly kit for the FR5300 or FR6300? Yes. These pre-selectors require a specific mounting plate and assembly kit for proper physical and electrical installation within the repeater chassis.

Can I tune these myself? These are precision-tuned instruments. While they can be adjusted, we highly recommend having them tuned with a professional network analyzer to ensure the narrow bandpass is perfectly aligned with your frequencies.

Will this help with lightning protection? No. While it filters RF signals, it is not a surge suppressor. We always recommend external lightning arrestors for antenna feedlines.

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