Diamond MX-72N Duplexer HF/VHF/UHF, 1.6-30/49-150/400-460MHz, 1kW PEP, SO-239

Compact High-Isolation Duplexer for HF, VHF and UHF

The Diamond MX-72N is a compact, high-performance duplexer covering HF (1.6–30MHz), VHF (49–150MHz), and UHF (400–460MHz) simultaneously from a single SO-239 common port. With 60dB of isolation on the low-pass port and a 1kW PEP power rating on HF, it punches well above its compact 220g form factor. The mixed connector configuration — PL-259 on the LPF port and Type N on the HPF port — makes it a versatile choice for installations using different feedline connector types. Extended receive-only passbands (LPF: 1.6–225MHz, HPF: 340–1000MHz) provide additional monitoring flexibility. Supplied with 35cm of 5D-2VS coaxial cable.

Key Features

• Simultaneous operation: 1.6–30MHz (LPF), 49–150MHz (LPF), and 400–460MHz (HPF)
• Extended receive-only passbands: LPF 1.6–225MHz, HPF 340–1000MHz
• 60dB+ isolation on the LPF port
• 1kW PEP on HF (1.6–30MHz); 400W PEP on VHF; 250W PEP on UHF
• Low insertion loss: <0.15dB (LPF) and <0.25dB (HPF)
• 50 Ohm impedance, VSWR <1.2:1
• Common: SO-239 | LPF port: PL-259 | HPF port: Type N male | Cable: 5D-2VS, 35cm
• Compact and lightweight: 46 × 57 × 25mm, 220g

Technical Specifications

• LPF Passband (TX/RX): 1.6–30MHz and 49–150MHz
• HPF Passband (TX/RX): 400–460MHz
• LPF Receive-Only Passband: 1.6–225MHz
• HPF Receive-Only Passband: 340–1000MHz
• LPF Insertion Loss: Less than 0.15dB
• HPF Insertion Loss: Less than 0.25dB
• Maximum Input Power: 1.6–30MHz / 1kW (PEP), 400W (CW)
• Maximum Input Power: 49–150MHz / 400W (PEP), 150W (CW)
• Maximum Input Power: 400–460MHz / 250W (PEP), 100W (CW)
• Isolation: More than 60dB (LPF)
• Impedance: 50 Ohms, VSWR <1.2:1
• Common Socket: SO-239
• LPF Port: PL-259
• HPF Port: Type N, male
• Coaxial Cable: 5D-2VS, 35cm
• Dimensions: W46 × D57 × H25mm
• Weight: 220g