Radio Relay (Wide Area Systems) Antenna Overview
Type - See Table
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Racal Antennas has expanded its range of radio relay or wide area systems antennas covering the main band 1, 3+ and 4 frequency bands.  All antenna are rugged in construction, quick and easy to assemble and ideal for tactical use in the most severe environmental conditions.

Band 1 - Log Periodic - 225-450MHz >

The 999 log periodic array has been designed for a range of applications including tactical surveillance, monitoring, electronic countermeasures and point to point communications.  Vertical or horizontal modes of operation can be chosen and very similar radiation patterns are produced in both orientations.  Mechanical fittings are of stainless steel construction and the boom section insulators are manufactured from glass-reinforced polyester.

Band 1 - Corner Reflector - 225-450MHz >

The 1607-900 corner reflector antenna is suitable for tactical deployment operating over 225 to 400 MHz frequency band (Band 1). In addition to its outstanding electrical performance, its main features are its lightweight rugged design, ease of use and low wind drag.  The design is based on a corner reflector with a fully welded lightweight aluminium reflector and a dipole feed assembly.  The antenna is linearly polarised, with two mounting spigots at the rear provided for either horizontal or vertical polarisation.  For ease of transportation each reflector can be folded into a flat position, which also protects the feed (see picture below).  For ease of transportation and stowage a bi-fold reflector version is also available to further reduce the size of the collapsed antenna.

Band 3+ - Gridded Dish - 1350-2690MHz >

The 1604 gridded dish antenna is suitable for tactical deployment operating in the 1350 to 2690 MHz band (Band 3+) utilising a single feed. In addition to its outstanding electrical performance, its main features are lightweight rugged design, ease of use and low wind drag.  The design is based on a front-fed gridded parabola, including a proprietary wide band feed within a sealed unit. For ease of transportation and stowage the feed may be readily removed from the reflector.  A split reflector version is also available to further reduce the stowed size.  The gridded reflector is of welded aluminium construction with two 40mm mounting sockets to enable rapid mast mounting and polarisation alignment.

Band 4 - Solid Dish - 4.4-5.0MHz (5.725-5.850MHz) >

The 1623 solid dish antenna has been designed for point-to-point radio relay communications in the 4.4-5.5 GHz band (Band 4) and 5.725-5.850MHz ISM band. It maintains excellent performance over the full frequency range with a front to back ratio of better than 25dB and excellent sidelobe control.  Polarisation is achieved by mounting the antenna using one of two 40mm sockets on the rear of the antenna.

Telescopic Support Masts

Racal Antennas manufactures a wide range of telescopic support masts suitable for deploying radio relay antennas in the field.  Manufactured from either aluminium or composite materials, they can be rapidly deployed with heights available up the 50 metres.  Once erected, masts can still be rotated by 360 degrees and locked in position to enable antenna pointing.  Racal Antennas also manufactures a wide range of headload accessories to meet the need for reliable and flexible communications.  Antenna rotators, tilters and polarizers are used to enable accurate antenna alignment, controlled via manoeuvring ropes at ground level.  Optional motorised versions are available where remote operation is required.  Cross booms enable multiple headloads to be installed on the same mast and, if combined with rotators and tilters will enable independent alignment of each antenna.

 

Model

999

1607

1604

1623

Frequency Range

225-400MHz

225-400MHz

1350-2690MHz

4.4-5.0MHz

Gain

6-8dBi

9.5 dBi (min)

>26 dBi @ 2690 MHz

27.7dBi

VSWR

2:1 max

2:1 max

2:1 max

1.3:1 max

Polarisation

Horizontal or Vertical

Horizontal or Vertical

Horizontal or Vertical

Horizontal or Vertical

Input Impedance

50 ohm

50 ohm

50 ohm

50 ohm

Front to Back Ratio

>15dB 

19dB @ 225MHz

28dB @ 400MHz

>25dB

>35dB

Power Handling

50W

50W

50W

20W

Input Connector

N Type Socket

N Type or Spinner 4-11 Socket

N type or Spinner 4-11 Socket

N Type Female

Dimensions

1300 x 650mm

1400 x 800 x 500mm

1320 x 1180 x 270mm

800 x 350mm

Weight (approx)

3kg

8kg

11kg

7.3kg



Racal Antennas
Racal Antennas

Racal Antennas

Racal Antennas
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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