Model SD3-150 136 - 174 MHz. 3 dBd. Gain 
 

STACKED DIPOLE ARRAY

Design Features:The SD3-150 high performance VHF stacked dipole array is designed for use with highly populated radio sites requiring long haul omni directional coverage. The SD3-150 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 Repeater and Paging sites.

Constructions: The SD3-150 Stacked Dipole Array consists of two folded dipoles stacked vertically. This Stacked Dipole Antenna operates at D.C. ground for protection against lightning. N-Female connector of phasing harness cable sealed in heat shrinking tube making stacked dipole antenna waterproofing. The 3.65 Meters long central mast for mounting the dipoles shipped in two sections of 1.8 Meters each for easy of shipping.

Electrical Specifications:
Frequency Range 136 - 174 MHz.
Gain3 dBd.
Bandwidth10 MHz.
PolarizationVertical
Input Impedance50 Ohms.
Radiation PatternOmni-Directional
Beamwidth -3dB.36 Degrees (Vertical)
VSWR1.5 : 1
RF Power Handling Capacity250 Watts
Input TerminationN-Female
Lightning ProtectionDirect Ground

Mechanical Specifications:
MaterialsAluminum
Mounting Hardware -MaterialsStainless Steel
Wind Rating210 Km/Hr.
Overall Length3.65
Support Pipe Aluminum - Outer Diameter. 50 mm
Dipoles Aluminum - O.D.12.7 mm
Shipping Length1.8 Meters
Support Pipe O.D.51mm
Support Pipe MaterialAluminum
Maximum Mount Pipe Diameter 52 mm (2 Inches)
Gross Weight8 Kgs.

Environmental Specifications:
Operating Temperature(-)30 to +70 Degrees Celsius
Storage Temperature(-)40 to +80 Degrees Celsius
Humidity0 to 95% RH