HF Near Vertical Incident Skywave (NVIS) Wire Antenna
2-30MHz
Type 3028-900
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Racal Antennas

Designed as a lightweight, quick to erect, NVIS antenna system, the 3028-900 HF Antenna Kit can be deployed as a stand-alone or vehicle mounted system.  Packed in a small canvas carrying bag, the 3028-900 kit can be rapidly erected to provide an HF tactical antenna solution for troublesome communication ranges. The system produces high angle radiation that is suited to short range ionospheric propagation (for example over mountain ranges).

Operating up to a maximum of 1kW, the antenna is suitable for use across the 2 MHz to 30MHz band when used in conjunction with an HF antenna tuner. NVIS propagation is normally dependent on local and seasonal ionospheric conditions below 12 MHz.  The antenna system is supplied with a seven-section support pole to which four radial elements are attached. The impedance presented at the base of the system is similar to a conventional HF whip that can be impedance matched with an HF antenna tuner, either incorporated in the radio or as a stand-alone device.  The system is supported using the combination of the upper radiating elements and adjustable insulated ropes attached to light duty ground anchors.

 

Electrical Specification

Frequency Range

Tuneable over 2 MHz to 30 MHz

Polarisation

Mainly horizontal for high angle radiation

Power Rating

1 kW PEP

Connector

Special adaptor to 3/8 “-16

VSWR

Dependent on tuner characteristics

Mechanical Specification

Deployed Dimensions

Height 4.6 m above base Width 26 m typical

Weight of Kit

5.5 kg

Size of Carry Bag

725 x 230 x 120mm

Environmental Specification

Temperature

Operational -40°C to +55°C

 

Storage -55°C to +85°C

Humidity

Up to 95% RH

Wind

Subject to mounting arrangement

Mounting

Ground or vehicle mounting hardware can be supplied.

Erection Time

2 persons – less than 5 minutes

Racal Antennas

Item

Part No.

Title

Qty

1

3028-002-01

Base Adaptor Assembly

1

2

3028-003-03

Mast Sections

7

3

3028-001-01

Head Adaptor Assembly

1

4

3028-004-01

Element Assembly (short)

2

5

3028-005-01

Element Assembly (long)

2

6

3028-006-01

Carrying Case

1

7

3028-019-01

Ground Anchors

4

8

3028-300-01

Handbook

1

Note: Items 4, 5 and 7 can remain attached to item 3 for stowage in the carrying case

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