The HF230L-B is a compact HF antenna for rapid deployment to create a base station working from 1.6 to 30 MHz. It is designed to provide superior Near Vertical Incident Skywave (NVIS) performance at distances from 0 to 500 km and allows continuous communications in ground wave, NVIS and skywave applications.
The communications characteristics of the antenna are similar to a wire antenna mounted on a 10 m mast.
The HF230L-B is a direct replacement for existing mast mounted HF base station antennas with the important advantage of only requiring a fraction of the time and space to install. The mounting of the system only takes a few minutes and requires no special installation equipment.
This new generation HF antenna is difficult to detect because of its small size and, most importantly, it reduces co-site interference with other HF and all VHF/UHF whip antennas.
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|Frequency Range||1.6-30 MHz|
|Impedance||1 to 1000 Ω
50 Ω nominal
|Power Rating||400 W PEP and average|
|Gain||– 10 dBi @ 3.5 MHz
– 4 dBi @ 10 MHz
|Radiation Pattern||Omnidirectional for NVIS|
|Power Supply||18-32 V DC, normally supplied from Power Amplifier|
|Connector||10 mm stud for RF
MIL-C-5015, 7 pin 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||Copper braided fibreglass collapsible radiating loop. Feed tower made from aluminium and fibreglass.|
|Size||Base Plate: 115 x 30 cm
Radiating Loop: 250 cm diameter
|Weight||approximately 17 kg (without ATU)|
|Wind Rating||55 m/s = 201 km/h|
Radiating element covered with black heatshrink tube
|Environmental||Test Method: Per MIL-STD-810F
Shock and Vibration: Transportation
Water Resistance: IP67
Temperature Range: – 40°C to + 71°C
|Installation||see Comrod installation manual|