HF230L-B
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 |
| Finish | Anodize, Black 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 |