The Diamond SE300 premium dual-band base station antenna is a commercial-grade, high-gain vertical collinear radiator precision-engineered to deliver exceptional omnidirectional signal propagation, structural resilience, and long-range transceiver linking across professional base stations and local communication networks. Encased in a high-integrity, heavy-duty FRP (Fiberglass Reinforced Plastic) outershell, this high-performance vertical antenna completely eliminates the need for radial ground planes due to its sophisticated radialless architecture. It serves as an essential logistics procurement component for municipal command centers, regional emergency broadcast stations, amateur radio repeaters, and high-volume B2B radiocommunication accessory wholesale distributors looking to secure clean VHF/UHF lines.
The advanced internal electrical architecture of the Diamond SE300 features a highly optimized phasing matrix running a 2x 5/8 wave radialless C-Load configuration on the 144 MHz (2-meter) band and a dense 5x 5/8 wave radialless C-Load configuration on the 430 MHz (70-centimeter) band. This technical layout compresses the vertical radiation angle toward the horizon to yield an impressive signal gain profile of 6.5 dBi at 144MHz and a massive 9.0 dBi at 430MHz. Standing at a substantial physical length of 2.85 meters with a net weight of 1.4 kg, the structural engineering yields a rigorous rated wind velocity resistance of up to 50 m/sec. Designed to maintain a stable voltage standing wave ratio (VSWR of less than 1.5:1) across a standard 50 Ohms nominal impedance, it handles up to a 150 Watts maximum power rating (FM). The antenna package comes terminated at its base with a heavy-gauge MJ Typology (PL female / SO-239) chassis jack and includes heavy-duty mounting hardware that accepts support masts with a outer diameter clearance ranging from 30 mm to 62 mm, ensuring absolute multi-shift field deployment readiness.
| Technical Specification Parameter | Specifications |
|---|---|
| Product Brand Designation | Diamond Antenna (Original Manufacturing) |
| Hardware Model Designation | SE300 (SE Collinear High-Gain Glassfiber Series) |
| Primary Component Classification | Dual-Band Collinear Omnidirectional Base Station Antenna |
| Operational Frequency Windows | 144 MHz VHF (2m Band) and 430 MHz UHF (70cm Band) Dual Operation |
| Antenna Electrical Typology (144MHz) | 2x 5/8 wave radialless C-Load configuration |
| Antenna Electrical Typology (430MHz) | 5x 5/8 wave radialless C-Load configuration |
| Omnidirectional Signal Gain (VHF) | 6.5 dBi High-Efficiency Performance Gain |
| Omnidirectional Signal Gain (UHF) | 9.0 dBi High-Efficiency Performance Gain |
| Maximum Input RF Power Capacity | 150 Watts Maximum Rating Threshold (FM Mode) |
| System Voltage Standing Wave Ratio | VSWR Less than 1.5:1 tight matching variance |
| System Characteristic Impedance | 50 Ohms Nominal Standard Optimization |
| Primary Weather Housing Shield | Heavy-duty Fiber Reinforced Plastic (FRP) outershell casing |
| Environmental Wind Survivability | Rated wind velocity limit of up to 50 m/sec |
| Primary RF Interface Connection | MJ Typology (PL Female / SO-239 Heavy-Gauge Coaxial Chassis Jack) |
| Total Physical Vertical Length | 2.85 meters overall height footprint |
| Net Component Mass Weight | 1.4 kg balanced configuration |
| Accepted Support Mast Clearances | Accommodates pipe diameters from 30 mm minimum to 62 mm maximum |
| Primary Fleet Utility Purpose | Turnkey fixed base station dual-band expansion, high-gain localized repeater infrastructure, rugged outdoor long-range transmission, and fleet control room outfitting |
