The HF230L-N is a compact HF antenna for naval applications operating over a frequency range of 1.6 to 30 MHz. It is designed to provide superior Near Vertical Incident Skywave (NVIS) performance at distances from 0 to 500 km compared to a 10 m whip and allows continuous communications in ground-wave, NVIS and skywave applications.
The HF230L-N is a magnetic dipole antenna which can be placed at any appropriate top-side position on the ship. The magnetic characteristics of the antenna means the antenna has a far superior signal-to-noise ratio compared to whip antennas as it decoupled from the near field electrostatic noise sources.
This compact antenna is recommended for multiple antenna top-side applications, both because of its small size and because it reduces co-site interference with all V/UHF whip antennas.
The HF230L-N has been designed to give superior performance and easier installation at a far lower cost compared to other naval HF NVIS antennas.
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|Frequency Range||1.6-30 MHz|
|Impedance||1 to 1000 Ω
50 Ω nominal
|Power Rating||500 W PEP and average|
|Gain||-10 dBi @ 3.5 MHz
-4 dBi @ 10 MHz
|Radiation Pattern||See Charts Tab|
|Power Supply||18-32 VDC, normally supplied from power amplifier|
|Connector||10 mm stud for RF MIL-C-5015, 7pin for interface to ATU and supply voltage|
|Interface||The antenna has two digital inputs and one output, and a RS485 serial port. Software is then configured depending on radio system|
|Design||Double 20 mm aluminium radiating element with 8 support rods. Enclosure made from fibreglass.|
|Size||Enclosure: 80 x 40 cm (H x W)
Radiating loop: 2 x2 m
|Weight||Total: < 40 kg|
|Wind Rating||55 m/s = 201 km/h|
|Finish||Polyurethane lacquer, normally grey|
|Environmental||Test Method: Per MIL-STD-810F
Shock and Vibration: Ship
Water Resistance: IP67
Temperature Range: – 40°C to + 71°C