The Diamond NR770S is a commercial-grade, high-performance dual-band mobile antenna engineered to deliver exceptional RF efficiency and rugged physical infrastructure for vehicular transceivers. Operating seamlessly across both the 144 MHz (VHF) and 430 MHz (UHF) frequency spectrums, this compact whip antenna delivers a steady 2.15 dBi nominal system gain on both bands while supporting an impressive 100-Watt maximum power rating in FM mode. It stands as an essential physical asset for commercial transport fleets, public safety vehicles, field utility logistics coordinates, and high-rotation B2B radiocommunication wholesale distribution channels.
Built to sustain continuous highway rotation, severe vibration profiles, and high aerodynamic drag, the streamlined mechanical layout measures just 0.43 meters in length and weighs a balanced 150 grams. The advanced electromagnetic architecture features a 1/4-wave topology on 144 MHz and a highly efficient 1/2-wave radialless configuration on 430 MHz, allowing the antenna to operate at peak performance without relying heavily on a massive vehicle chassis ground plane. Terminated with a precision-machined MP (PL-259 male UHF standard) connector base offering an optimized Voltage Standing Wave Ratio (VSWR < 1.5:1), it ensures a low-attenuation electrical link and a flush, vibration-proof mount on standard mobile magnetic bases or gutter mounts.
SPECIFICATIONS & VERIFIED INFRASTRUCTURE FEATURES:
• Component Type: Professional Dual-Band Handheld/Vehicular Mobile Antenna
• Operational Frequency Spectrum: Dual-Band 144 MHz (VHF) / 430 MHz (UHF) Matrix
• Electrical Wave Topology Configuration:
– 144 MHz Band: 1/4 λ (Quarter-Wave) High-Efficiency Profile
– 430 MHz Band: 1/2 λ (Half-Wave) Radialless Low-Maintenance Architecture
• Antenna System Nominal Gain: 2.15 dBi (Optimized for both 144 and 430 MHz center loops)
• Peak Power Handling Threshold: 100 Watts Maximum Continuous Input Power Rating (FM Total)
• Voltage Standing Wave Ratio (VSWR): < 1.5:1 High-Isolation Impedance Matching
• System Nominal Impedance: 50 Ohms (Standard RF Interface Calibration)
• Primary RF Interface Standard: Precision-machined MP (PL-259 / UHF-Male) Connector base
• Total Assembly Physical Length: 0.43 meters
• Net Hardware Weight: 150 grams
• Application: Perfect for outfitting commercial logistics transport fleets with low-profile dual-band antennas, upgrading original multi-band mobile stock lines, optimizing voice relays on field service benches, and maintaining high-volume component inventory for specialized B2B retail distribution.
