The Diamond SRH940 is a commercial-grade, ultra-wideband portable antenna system engineered to deliver exceptional transmission efficiency and expanded reception infrastructure for advanced handheld transceivers. Operating as a dedicated tri-band transmission radiator, it provides precision-tuned performance on the 50 MHz (6-meter), 144 MHz (2-meter VHF), and 430 MHz (70-centimeter UHF) bands. Beyond its primary transmission capabilities, the antenna serves as a high-integrity wideband monitoring utility, engineered to maximize reception across AM/FM broadcast bands, civil aviation Air Bands, and public utility scanning spectrums (150/300/450/900 MHz). It stands as an essential physical infrastructure asset for emergency response coordinators, search and rescue teams, technical signal interceptors, and high-rotation B2B radiocommunication distribution networks.
Built to sustain continuous service rotation and mechanical bending fatigue on field service benches or active patrol environments, the whip element features a highly flexible, impact-resistant polymer sheath enclosing a premium radiator structure. The antenna’s internal electrical design is engineered as a 1/4-wave element at 50 MHz and 144 MHz, and transitions to a high-efficiency 1/2-wave configuration at 430 MHz to deliver a stable 2.15 dBi system gain. Terminated with a precision-milled SMA-Male connector with a low-profile base collar, it ensures an absolute flush, weather-resistant, and vibration-proof mechanical link directly to the transceiver chassis port, minimizing mechanical stress on the radio’s top-accessory socket.
SPECIFICATIONS & VERIFIED INFRASTRUCTURE FEATURES:
• Component Type: Professional Handheld Multi-Band Tactical Whip Antenna
• Certified Transmission (TX) Band Allocation: 50 MHz / 144 MHz / 430 MHz Tri-Band Core
• Wideband Reception (RX) Frequency Matrix: AM / FM Broadcast, Civil Aviation Air Band, 150 MHz, 300 MHz, 450 MHz, and 900 MHz Spectrums
• Antenna System Nominal Gain: 2.15 dBi
• Power Handling Threshold: 10 Watts Maximum Continuous Input Power
• Wave Profile Architecture: 1/4 λ (50/144 MHz) and 1/2 λ (430 MHz) Variable Electrical Layout
• Primary RF Interface Standard: Precision-machined SMA-Male (Plug) connector
• Total Assembly Physical Length: 45 cm
• Net Hardware Weight: 44 grams
• Radiator Armor Profile: High-elasticity, all-weather black polymer protective jacket
• Application: Perfect for upgrading original manufacturer rubber ducks on multi-band transceivers, maximizing reception tracking on portable scanners, boosting field communications coverage, and maintaining a high-volume, premium stock line for specialized B2B retail distribution channels.
