Comet CFX-324A Triplexer/RF Combiner-Splitter, 1.3–150 MHz & 200–320 MHz & 390–500 MHz, 600 W PEP, 40 dB Isolation, SO-239 & PL-259

The Comet CFX-324A Triplexer is a high-performance RF filtering and combining device engineered for serious amateur device operators and RF professionals. It effectively merges or splits signals across three distinct frequency ranges — 1.3–150 MHz (low), 200–320 MHz (mid), and 390–500 MHz (high) — using high-quality internal band-pass filters. These filters ensure that each frequency path remains clean and efficient, allowing multiple devices or antennas to share a single coaxial run without degrading performance. With exceptionally low insertion losses — 0.2 dB on the low band, 0.25 dB on the mid band, and 0.3 dB on the high band — the triplexer preserves nearly all of the transmitted or received power. This makes it an ideal solution for high-power setups: the CFX-324A can safely handle up to 600 W PEP on each band, enabling use in powerful base stations, repeater systems, or combined multi-device configurations. Isolation is a critical specification for combining or splitting multiple device signals, and the CFX-324A delivers a minimum of 40 dB isolation between its three ports. This level of isolation significantly reduces the risk of cross-modulation, interference, or TVI, making the unit reliable even in demanding multi-device environments. In terms of connectors, the CFX-324A uses a SO-239 female common port, and each of the low-pass, mid-pass, and high-pass paths is terminated with a PL-259 male coax lead, providing excellent flexibility when integrating into your device setup. The coax leads allow you to position the triplexer in your shack or at the tower base and connect devices or antennas with standard UHF connectors. Comet triplexers like the CFX-324A are designed to support advanced configurations: for example, you can combine three separate devices onto one triband antenna, or split a single multi-band device into three different antenna paths. This reduces infrastructure complexity, cuts down on feed line runs, and can save on tower real estate or cabling costs. Constructed with ruggedness in mind, the device is suitable for both indoor and outdoor (sheltered) installations. Its compact form factor ensures it can be mounted conveniently, while its durable internal filtering network provides long-term stability and performance. Backed by Comet’s reputation for high-quality RF components and supported by a one-year manufacturer warranty, the CFX-324A Triplexer is a reliable, high-power solution for multi-band device systems demanding seamless integration, superior isolation, and robust performance.

• Combines or splits three RF bands — HF (1.3–150 MHz), VHF (200–320 MHz), and UHF (390–500 MHz) — allowing multi-band operation through a single feed line
• Low insertion loss across all bands — just 0.2 dB for low, 0.25 dB for mid, and 0.3 dB for high — preserving transmit power and signal integrity
• Handles up to 600 W PEP on each of its three band ports, making it ideal for high-power base station, repeater, or multi-device setups
• Provides excellent isolation (minimum 40 dB) between each pass band, minimizing cross-modulation and preventing interference between connected devices
• Robust and compatible connector design: common SO-239 female port, with three PL-259 coax-lead outputs for low, mid, and high pass, for flexible integration