2018 Mobile Magnetic Loop HF Antenna

Efficient magnetic loop antenna

Short range HF coverage
As the 2018 predominantly radiates RF energy towards the ionosphere as  a  vehicle  mounted  NVIS  (Near  Vertical  Incidence  Sky  wave) antenna, it is effective in overcoming the skip zone common in whip based antenna systems providing superior operation in the range of 30 to 150 kms. For the same reason the 2018 antenna is highly effective for communication in mountainous areas.

High performance
The  2018  mobile magnetic loop HF antenna is significantly more efficient than whip type vehicle antennas, producing considerably more efficient transmission and reception. The received signal relative to a whip antenna systems improves by +10 dB to +14 dB. The 2018 antenna includes a built-in broadband scan amplifier which allows it to be used with systems  containing Automatic Link Establishment (ALE) and multi-frequency networks operating in a Selective Calling scan group.

The radiation pattern of the 2018 antenna has low angle nulls toward each side of the vehicle, effectively reducing noise from adjacent power lines which commonly affect vehicles driving on remote roads that have high voltage distribution lines in close proximity.Rugged construction. The 2018 Mobile magnetic loop HF antenna has been integrated in a roof rack, which allows it to be easily disguised in covert operations. The ground plane for the antenna is a heavy duty aluminium mesh floor, which is welded to the frame bars, maximising current within  the radiating loop. Using a closed magnetic loop antenna design, the antenna effectively shields and isolates vehicle ignition noise thus providing greater clarity in communications. The roof rack is field proven in some of the world's worst remote area conditions and is designed to withstand rough corrugated, pot holed and unsealed roads. Mounting hardware sets are available to suit most types of vehicles. Custom brackets can be made for all types of military vehicles.

Mounting hardware to suit all vehicles
Mounting hardware sets are available to suit most types of vehicles, including Land Rover Discovery, Toyota Land Cruiser, Toyota Prado, Nissan Patrol and Mitsubishi Pajero. Custom brackets can be made for all types of vehicles.

MIL-STD environmental ratings
MIL-STD 810G (immersion). Fitted with a pressure equalising breather to equalise pressure without allowing the ingress of moisture.
MIL-STD 810G Method 516.6 for shock
MIL-STD 810G Method 514.6 for vibration
MIL-STD 810G Method 510.5 for dust

Other features:

• Significant increase in Rx efficiency and Tx radiation compared to a whip antenna for NVIS operations
• NVIS  operation providing  virtually continuous  HF coverage  from  0  to 1000 km +
• Noise  reduction - increased immunity to ignition and power line noise

Temperature operating
-30ºC to 60ºC

Humidity
95% non-condensing

Environmental rating
MIL-STD 810G (immersion). Fitted with a pressure equalising breather to equalise pressure without allowing the ingress of moisture. MIL-STD 810G for shock, vibration and dust.