Comet CF-142 Duplexer 1.3-150/200-480MHz, 600W, SO-239

HF and VHF/UHF Duplexer for 2m and 220MHz Band Operation

The Comet CF-142 is a dual-band duplexer designed for simultaneous transmission and reception across HF/VHF (1.3–150MHz) and the 200–480MHz range, making it particularly suited to installations combining HF or 2m operation with 220MHz (1.25m band) or 70cm use. Bandpass filters simultaneously pass RF in both directions through the common SO-239 connector, while providing 40dB of isolation between the low-pass and high-pass ports. The unused port can remain open, though terminating with a dummy load is recommended for best results.

Key Features

• Simultaneous dual-band operation: 1.3–150MHz and 200–480MHz
• Suited to HF/2m and 220MHz/70cm multi-band installations
• 40dB isolation between ports
• 600W PEP on the low-pass port; 400W PEP on the high-pass port
• Low insertion loss: <0.2dB (LPF) and <0.3dB (HPF)
• 50 Ohm impedance
• Common: SO-239 | Low pass: PL-259 | High pass: PL-259
• TX and RX from two radios simultaneously into a dual-band antenna
• Combine a dual-band radio with separate outputs into a single dual-band antenna

Technical Specifications

• LPF Passband: 1.3–150MHz
• HPF Passband: 200–480MHz
• LPF Insertion Loss: Less than 0.2dB
• HPF Insertion Loss: Less than 0.3dB
• Maximum Input Power: LPF / 600W (PEP)
• Maximum Input Power: HPF / 400W (PEP)
• Isolation: 40dB
• Common Connector: SO-239
• Low Pass Port: PL-259
• High Pass Port: PL-259