Fixed Base NVIS Loop Antenna
Operating both NVIS and long distance sky wave.
As well as the compact mobile HF loop, two versions of fixed station loop antennas are also available, which operate on both NVIS and long distance sky-wave propagation modes across 3-30MHz.
The two versions are a wire element loop with 3m sides, and a solid element loop with 2.5m sides, each offering similar high efficiency. These are ideal for use where space is limited, and rival the performance of much larger wideband HF wire antennas.
Like the mobile loop, the fixed station loop is capable of automatically tuning across its frequency range in less than a 50th of a second, it is compatible with virtually any HF transceiver including frequency hopping types without the need for a separate control.
Technical Specification
| TX Power Input Range | 1.5-200 Watts PEP |
| Continuous TX CW/Data Power | 80W |
| Number of operating channels | Unlimited |
| Non-Volatile Channel Memory Addresses | 170 (165 TX, 5 RX) |
| Input Impedance Range | 50 ohms |
| VSWR | Typically less than 2:1 when tuned, (3:1 max) |
| DC Operating Range | +10.0V to 18.5V DC, (+13.8 V DC nominal) 24V DC nominal also available on request |
| DC Current | 900 mA average |
Initial tuning response time (initial memory setting only) |
2 - 20 sec per channel |
| Recurrent tuning response time (on-air use inc. freq hopping) | Typically less than 10 ms per channel |
| Operational Temperature | -35° to +70°C |
| Control Cable | Standard 50 ohn coaxial cable plus DC feed 3m in length |