Comet CFX-514 High-Isolation Triplexer/RF Combiner-Splitter, 1.3–90 MHz & 130–200 MHz & 380–500 MHz, 800W / 500W PEP, SO-239 & PL-259 Coax Leads

The Comet CFX-514 Triplexer is a high-performance RF combiner/splitter designed for serious amateur device operators and RF infrastructure users who want to manage three distinct frequency bands through a single coaxial line. Covering 1.3–90 MHz (HF/6 m), 130–200 MHz (2 m), and 380–500 MHz (70 cm), this triplexer enables you to either combine multiple transceivers into a single antenna or split a single multi-band transceiver to drive multiple antennas. Its internal network of high-quality band-pass filters delivers impressively low insertion loss — just about 0.20 dB on the HF/6 m band, around 0.25 dB on the 2 m band, and close to 0.30 dB on the 70 cm band — ensuring minimal signal degradation during use. This efficiency is especially beneficial when running high-power transmissions or when sensitivity is critical on receive. In terms of power handling, the CFX-514 supports up to 800 W PEP on both the low (1.3–90 MHz) and mid (130–200 MHz) bands, and up to 500 W PEP on the high (380–500 MHz) band. This makes it well-suited for demanding base stations, repeater systems, or multi-transmitter setups. One of the key strengths of the CFX-514 is its very high isolation, rated at 55 dB, between its three ports. This level of isolation helps prevent cross-talk, intermodulation, and TVI (television interference) when different devices operate simultaneously, making the triplexer reliable and stable even in dense RF environments. The physical connector layout is designed for flexibility and robustness: the common port uses an SO-239 female connector, and the three band outputs each come on PL-259 male coax leads, giving you freedom in how and where to mount the triplexer, whether in a device shack or at a tower base. In field deployment, you can use the CFX-514 to combine three separate devices into one multi-band antenna, or to divide a single multi-band device across three separate feeds. If you choose not to use one of the band paths, you can leave its port open, although using a dummy load is strongly recommended to optimize performance and maintain impedance stability. Backed by Comet’s reputation for high-quality RF components, the CFX-514 is a trusted solution for operators who demand clean RF paths, efficient power handling, and excellent isolation. It’s ideally suited for ham device builders, repeater sites, and multi-band stations looking to simplify their feedline architecture and improve system performance.

• Combines or splits three device bands — HF/6 m (1.3–90 MHz), 2 m (130–200 MHz), and 70 cm (380–500 MHz) — for efficient multi-band operation with a single feed line
• Ultra-low insertion loss across all paths: approximately 0.2 dB on the low band, 0.25 dB on the mid band, and 0.3 dB on the high band — preserving transmit and receive power
• High power handling: up to 800 W PEP on both the low-pass (1.3–90 MHz) and mid-pass (130–200 MHz) bands, and up to 500 W on the high-pass (380–500 MHz) band
• Exceptional isolation of at least 55 dB between the three ports, minimizing cross-modulation and interference in multi-device or shared-antenna systems
• Durable and flexible connector design: common SO-239 female port and three PL-259 male leads (low/mid/high), allowing reliable integration in standard coax setups