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4O3A Signature High Power HF Triplexer Combiner HFC4500
SKU Part Number: 4O-HFC4500
4O3A Signature HFC4500 High Power HF Triplexer Combiner The 4O3A Signature HFC4500 is a professional-grade high power HF triplexer combiner designed...
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£626.95
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4O3A Signature HFC4500 High Power HF Triplexer Combiner

The 4O3A Signature HFC4500 is a professional-grade high power HF triplexer combiner designed to enable three stations to operate simultaneously on a single triband 20m/15m/10m antenna, such as a Yagi, using only one coaxial feedline. With each station capable of running up to 4.5 kW, it provides an advanced and efficient solution for serious contesters, DXpeditions and multi-operator setups.

A true game changer for SO2R and multi-station environments, the HFC4500 allows three operators to share one triband antenna without the need for separate monoband systems. It greatly reduces the complexity, cost, and maintenance associated with multiple antennas, towers, and feedlines.

To create a complete triplexer system, the HFC4500 must be used with three 4O3A Series S Bandpass Filters (one for each band). The combiner is not intended for standalone use and will not function correctly without the filters connected. When used together, the system delivers excellent isolation between bands and extremely low insertion loss, allowing simultaneous operation across 20m, 15m, and 10m even at full legal limit and beyond.

Developed and refined by Ranko Boca, 4O3A himself, this system has been proven at world-class contest stations. With its precision engineering, robust design and flexible configuration options, the HFC4500 is a cornerstone component for any high-performance HF station.

Key Features

  • Enables up to three stations to transmit simultaneously on 20m, 15m and 10m using one triband antenna and one feedline

  • Handles up to 4.5 kW input per port

  • Exceptionally low insertion loss (0.10–0.15 dB across bands)

  • Outstanding isolation between ports when paired with 4O3A Series S Bandpass Filters

  • Requires three 4O3A Series S Bandpass Filters for proper operation

  • Supports flexible setups including triplexer, duplexer or standalone filter use

  • High build quality for continuous high-power operation

  • Ideal for SO2R, multi-operator and DXpedition applications

Technical Specifications

  • Input Ports: 20m, 15m, 10m

  • Input Power (per port): 4500 W

  • Insertion Loss: 0.10 dB (20m), 0.10 dB (15m), 0.15 dB (10m)

  • Connectors: SO-239

  • Dimensions: 55 cm (W) x 12 cm (D) x 12 cm (H)

  • Weight: 2.8 kg

  • Cooling: Optional

  • Inter-port Attenuation (with filters):

    • Input 20m: 15m ≥ 87 dB, 10m ≥ 120 dB

    • Input 15m: 20m ≥ 104 dB, 10m ≥ 72 dB

    • Input 10m: 20m ≥ 120 dB, 15m ≥ 72 dB

  • RX IMD (worst case): -10 dBm (1600 W per port), -7 dBm (3200 W per port)

Shipping:

We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.

Returns:

If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

Click here for returns form

Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]