Diamond Antenna MX-72H Duplexer

Diamond Antenna MX-72H Duplexer

The Diamond MX-72H is a high-power VHF/UHF duplexer designed to allow simultaneous operation of dual-band transceivers through a single dual-band antenna. Covering the 1.3–170 MHz and 350–540 MHz frequency ranges, it offers excellent isolation, low insertion loss, and high power handling, making it ideal for amateur radio base, mobile, and repeater installations.

Key Features

• High-performance VHF/UHF duplexer for dual-band operation
• Combines VHF and UHF radios to a single dual-band antenna
• Frequency coverage from 1.3–170 MHz (Low Port)
• Frequency coverage from 350–540 MHz (High Port)
• Supports simultaneous transmit and receive operation
• Low insertion loss for maximum RF efficiency
• High isolation minimizes interaction between radios
• Handles high RF power for amateur radio applications
• Excellent VSWR characteristics across supported bands
• 50 Ohm impedance throughout
• Three SO-239 (UHF Female) connectors
• Suitable for base station and mobile installations
• Compact die-cast metal enclosure
• Factory tuned with no user adjustment required
• Wide operating bandwidth for multiple amateur bands
• Reliable filter design for clean signal separation
• Compatible with VHF, UHF, and dual-band transceivers
• Ideal for repeaters, mobile stations, and fixed installations
• Reduces antenna installation complexity
• Durable construction for long service life
• Professional-grade Diamond Antenna engineering
• Easy inline installation using standard coaxial cables
• No external power required
• Excellent RF shielding against interference
• Designed for continuous-duty amateur radio operation

Typical Uses

• Dual-band amateur radio base stations
• VHF/UHF mobile installations
• Repeater systems
• Shared antenna systems
• Emergency communication stations
• Amateur radio field operations
• Commercial communication systems

In the Box

• Diamond MX-72H Duplexer
• User documentation