info@defencewireless.in - GST NO. : 07EZKPK5478K1ZL
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| Business Type | Manufacturer, Exporter, Supplier |
| Frequency Range | 136 - 174 MHz |
| Polarization | Vertical |
| Gain | 3dBd Omni / 6dBd Offset |
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Product Details
DESIGN FEATURES :
The DW-SD3150 high performance VHF lower band stacked dipole array is designed for use with highly populated radio sites requiring long haul omni-directional coverage. The DW-SD3150 is heavy duty stacked dipole array features, wide bandwidth, high gain, high power handling capacity, low VSWR, low noise performance and null filling coverage with omni-directional characteristics. This stacked dipole array is highly suitable as base station antennas for PMR, Repeater and Paging sites. CONSTRUCTIONS: The SD3-150 Stacked Dipole Array consists of TWO folded dipoles stacked vertically, fed in phase. This Stacked Dipole Antenna operates at D.C. ground for protection against lightning. Termination of phasing harness cable sealed by heat shrinking tube making stacked dipole antenna waterproofing. The 3.6 Meters (12 feet) long central mast for mounting the dipoles is shipped in two sections of 1.8 Meters (6 feet) each for easy of shipping. The stacked dipole antenna is suitable to mount on the top of tower and is supplied with two mounting brackets.
RADIATION PATTERN :
When the TWO dipoles are arranged 180 degrees apart around the central mast, 3dBd. (5.15dBi) omni-directional radiation pattern results. Aligning the TWO dipoles collinearly (facing in one direction) a 6dBd. (8.15dBi) offset radiation pattern is obtained. The radiation pattern can be changed in the field by use of common hand tools. ELECTRICAL SPECIFICATIONS: Frequency Range 136 -174 MHz. Gain 3dBd Omni /6dBd Offset Bandwidth 10 MHz. Polarization Vertical Input Impedance 50 Ohms. Radiation Pattern Omni Directional Vertical Beam-width –Half Power Points 36 Degrees VSWR – Less than 1.5 : 1 RF Power Handling Capacity 500 watts. Input Termination N-Female Lightning Protection Direct Ground
MECHANICAL SPECIFICATIONS :
Mounting Hardware Stainless Steel Wind Rating 200 Km/Hr. Overall Length 3.6 Meters (12 feet) Support Pipe Aluminum – Outer Diameter 51 mm Dipoles Aluminum – Outer Diameter 12.7 mm Shipping Length 1.8 Meters (6 feet) Maximum Mount Pipe Diameter 52 mm (2 Inches) Gross Weight 10 Kgs. ENVIRONMENTAL SPECIFICATIONS: Operating Temperature (-)30 to +70 Degrees Celsius Storage Temperature (-)40 to +80 Degrees Celsius Humidity 0 to 95% RH.
