The MULDIPOL Multiple Dipole Collinear Array concept has been specifically developed for ground-air-ground, air traffic control and associated vehicular and base communications applications. This omni directional concept employs a unique method of shielding the feed cables to improve radiation pattern characteristics. The MULDIPOL also has a high degree of isolation between discrete elements within a closely spaced array. The result is a small, rugged, easy to install antenna. The lightweight and compact design minimizes space and lends itself to tactical transportable use in the most hostile environments. A minimum of 30 dB isolation is realized between any two antenna elements in every MULDIPOL model. The low profile of this antenna plus the resulting decrease in the number of antennas required at any tower site also gives a much improved radiation pattern coverage. The process employed in this series of antennas incorporates the patented MULDIPOL concept. The utilization of this technique results in a unit which has excellent broadband halfwave dipole characteristics over the entire operating frequencies. The desired figure eight radiation pattern is generally constant throughout the band. Through broadband suppression of extraneous currents upon the transmission line, the undesirable Clover Leaf pattern is avoided. The 5000 series has a metallic base providing the dipoles with a DC ground path. If DC ground is not a requirement then please refer to 4000 series.
Some models are available with a split or folding option to halve the stowed length for ease of transportation.
General Electrical Specification (see table below for individual model specification)
VSWR
2:1 maximum
Input Impedance
50
Power Handling
100W
Polarisation
Vertical
Isolation
30dB min
Environmental Specification
Altitude, rain, vibration, shock, salt, fog, sand and dust to MIL-STD-810A & B. Temperature, barometric pressure and humidity toMIL-STD-210 & 210A
Model
VHF 118-136 MHz
UHF 225-400 MHz
Gain (dBic)
No. of Outputs
HPBW (degrees)
Mounting Diameter
Length (cms)
Weight (kg)
Colour
Split Option
Folding Option
D5061A1
XX
4
1
40
2.5 IPS
318.75
8.64
White
N
Y
D5062A
2.5 IPS.
165
6.14
D5071
X
3
75
293.37
7.63
D5072
2
381
8.39
D5073
213.5
5.46
D5074
216
D5076
130
2.73
D5077
84.3
2.16
D5078
XXX