HFA421 Antenna
VLF LF LOOP ANTENNA FOR SUBMARINES
The HFA421 and ACU452 work together as complementary units, with each dependent on the other.
HFA421 Antenna
VLF LF LOOP ANTENNA FOR SUBMARINES
The HFA421 and ACU452 work together as complementary units, with each dependent on the other.
HFA421 Antenna
Loop antenna equipped with Antenna Control Unit (ACU) and power supply. The equipped electronic unit enables amplification of RF signals.
Technical data
| Dimensions | 390 mm × 390 mm × 205 mm |
|---|---|
| Weight | 31 kg |
| Sensitivity (Omni) |
Better than 0,26 µV/m/Hz ½ – from 10 to 20 kHz Better than 0,14 µV/m/Hz ½ – from 20 to 160 kHz |
| Sensitivity (Bi-Directional) |
Better than 0,20 µV/m/Hz ½ – from 10 to 20 kHz Better than 0,12 µV/m/Hz ½ – from 20 to 160 kHz |
| Shock | compliant with MIL S 901-D (Lightweight) |
| EMC/EMI | compliant with MIL-STD-461-E & STANAG 4437 Ed 2 |
ACU 452 Antenna 28VDC
The ACU 452 rack provides the link between the VLF/LF receiver and the HFA 421 antenna.
- 3 outputs: L channel, T channel, Omnidirectional L+T channel
- Equipment in 19 2 U format with power supply module (AL 482) included
- Power supply of loop antenna (HFA 421): 28 VDC, switched to the loop antenna via a pair of wires
- Input for feeding a measurement signal and measurement output to loop antenna
Technical data
| Power | 115 V / 60 Hz or 230 V / 60 Hz |
|---|---|
| Connectors | 50 Ω on N type connector |
| Test Signal Injection Input | 50 Ω on BNC connector |
