The premium Sirio MGA 108-550S Mobile antenna 1/4 λ Stainles steel whip – The Sirio MGA 108-550 S is a mobile antenna Stainles steel whip is a commercial-grade, high-integrity field communication radiator precision-engineered to deliver secure voice synchronization, continuous multi-system spectrum tracking, and elite antenna line conditioning across active mobile installations. Built by Sirio to satisfy demanding corporate and utility field requirements, this highly ruggedized 1/4-wavelength vertical whip overhauls weak, single-frequency factory patches that snap under branch impact or lack the broad tuning agility required for multi-tier radio deployment coordinates. It stands as an essential operational procurement asset for commercial transit fleets, maritime service crafts, aviation support vehicles, public safety tactical units, machine-to-machine telemetry nodes, and high-volume B2B radiocommunication hardware wholesale distribution networks looking to source authentic, original factory-genuine active infrastructure components.
The advanced internal RF architecture of this high-compliance hardware system relies on an exceptionally adaptable, single-element vertical radiator configured as a high-efficiency type: 1/4 λ wave array. Operating with a continuous frequency range: 108 … 550 MHz tunable capability, the antenna is custom-cut to length by technical field crews utilizing an included factory tuning chart. This extreme frequency bandwidth layout allows the whip to achieve perfect localized resonance across a massive array of specialized industrial frameworks—including 2m/1.25m/70cm amateur radio allocations, VHF Airband, VHF Marine Band, AIS marine tracking, TETRA-350/standard TETRA public safety channels, CDMA-450/LTE-450 data grids, and ORBCOMM M2M or ISM-169MHz remote telemetry operations.
To preserve absolute technical system alignment across brutal multi-season environment stress lines and intense highway wind friction curves, the structural body relies on a premium selection of heavy-duty materials: chromed brass and stainless steel. The radiator features a high-flexibility tapered stainless steel element that bends cleanly away from overhead obstacles without losing its shape or mechanical alignment. The robust base housing delivers a true gain: 0 dB ref. to a λ/4 whip baseline pattern with linear vertical polarization, focusing an **radiation: omnidirectional** signal field evenly across 360 degrees to maintain steady path tracking to remote base towers even over undulating, rugged terrain coordinates.
Housed inside a streamlined, ultra-lightweight frame configuration, the mobile antenna provides minimal mechanical wind-drag and low vertical torque on vehicle panel assemblies, registering a maximum physical height (approx): 663 mm and a balanced net operational weight. For straightforward integration and immediate deployment readiness, the package comes complete with a continuous cable: 5 m (16.4 ft) / RG58 low-loss coaxial feedline pigtail. Pre-engineered to handle an intense continuous forward max power: 100 W (CW) load limit while protecting delicate transmitter final power amplifiers from unexpected reverse-power impedance mismatch damage, this turnkey mounting type: on-connector mobile antenna ensures absolute field readiness for your professional communication network fleets.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Product Brand Designation | Sirio Antenne (Original Factory Genuine Italian Infrastructure Line) |
| Hardware Model Designation | MGA 108-550 S Custom Tunable Mobile Whip Series |
| Primary Component Classification | 1/4-Wave Monoband Field-Tunable Vehicular Radiator Antenna Assembly |
| Active Operational Spectrum | 108 MHz to 550 MHz Field-Cut Tunable Range (Continuous VHF / UHF Coverage) |
| Multi-System Interoperability Scope | 2m-HAM, 1.25m-HAM, 70cm-HAM, VHF Airband, VHF Marine Band, ORBCOMM M2M, AIS-162MHz, TETRA-350, standard TETRA, CDMA-450, LTE-450, ISM-169MHz, and VHF-260MHz networks |
| Antenna Element Wave Type | 1/4 λ (Quarter-Wave) Single Monopole Radiator Base |
| Rated Power Handling Capacity | 100 Watts (100 W) CW Continuous Wave Max Power Load Limit |
| Nominal System Forward Gain | 0 dB referenced to a standard λ/4 whip element curve profile |
| Signal Polarization and Radiation | Linear Vertical Polarization Matrix with 360-degree Omnidirectional Tracking Field |
| System Power Feed Interface | Integrated 5 Meters (16.4 feet) of Premium RG-58 Mil-Spec Coaxial Cable |
| System Characteristic Impedance | 50 Ohm Nominal RF Link Standardization Profile |
| Structural Material Composition | Heavy-Duty Tapered Stainless Steel Rod with Chromed Solid Brass Base Connector Assembly |
| Total System Clearance Height | Approximately 663 mm (2.18 feet) Low-Profile Vertical Clearance (MGA-108-550 PL alternative configuration baseline is 670 mm / 2.2 feet) |
| Net Operational Hardware Mass | Ultra-Lightweight Profile (SMA 108-550 PL: 55 g / 0.12 lb | MGA 108-550 PL alternative model configuration baseline is 70 g / 0.15 lb) |
| Primary Mount Interface Style | On-Connector Mechanical Direct Assembly Clamping Matrix |
| Verified Hardware Compatibility Scope | Mobile HF/VHF/UHF multi-mode transceivers, vehicular magnetic bases, heavy-duty trunk edge lip brackets, inline SWR/wattmeters, and field cutting shears |
| Primary Fleet Utility Purpose | Turnkey multi-frequency transport outfitting, discrete signal tracking line conditioning, emergency deployment link stabilization, and transmitter power stage protection |
