5000 Series VHF/UHF Air Traffic Control (ATC) Multiple Dipole (Muldipol) Antennas
Type 5000 Series
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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

 

XX

4

1

40

2.5 IPS.

165

6.14

White

N

Y

D5071

X

XX

1

3

75

2.5 IPS

293.37

7.63

White

N

Y

D5072

XX

 

1

2

75

2.5 IPS

381

8.39

White

N

Y

D5073

X

X

1

2

75

2.5 IPS

213.5

5.46

White

N

Y

D5074

 

XX

1

2

75

2.5 IPS

216

5.46

White

N

Y

D5076

X

 

1

1

75

2.5 IPS.

130

2.73

White

N

N

D5077

 

X

1

1

75

2.5 IPS.

84.3

2.16

White

N

N

D5078

 

XXX

1

3

75

2.5 IPS

293.37

7.63

White

N

Y



Racal Antennas
Racal Antennas

Racal Antennas
Split Option

Racal Antennas
Folding Option
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Racal Antennas Ltd, First Avenue, Millbrook Trading Estate, Southampton. SO15 0LJ
Telephone: +44 (0) 23 8070 5705 Fax: +44 (0) 23 8070 1122