Fixed NVIS Loop Antenna - SMC
Fixed NVIS Loop Antenna
Fixed NVIS Loop Antenna

Fixed NVIS Loop Antenna

The SMC Fixed Station Loop Antennas provide seamless and efficient HF communication, combining the power of NVIS and long-distance sky-wave propagation modes across 3-30MHz.
Like their mobile counterparts, these fixed station loop antennas boast automatic tuning capabilities, adjusting across their frequency range in less than a 50th of a second. Compatible with virtually any HF transceiver, including frequency hopping types, no separate control is required for operation.
Choose from our two versions of fixed station loop antennas, both offering exceptional performance:
1. Wire Element Loop with 3m sides
2. Solid Element Loop with 2.5m sides
Both options provide similarly high efficiencies, making them ideal for applications with limited space while rivaling the performance of much larger wideband HF wire antennas.
In receive mode, the antenna is factory-set to automatically store its tuning settings for the last tuned transmit frequency, maximising receive efficiency for non-scanning/frequency hopping modes.
Alternatively, upon user preference during ordering, it can be factory-set to operate ‘un-tuned’ in receive mode, enabling wide-band reception for scanning modes like ALE (Automatic Link Establishment) reception.
Loop antenna
TX Power Input Range
Continuous TX CW/Data Power
Number of operating channels
Non-Volatile Channel Memory Addresses
Input Impedance Range
DC Operating Range
DC Current
Initial tuning response time (initial memory setting only)
Recurrent tuning response time (on-air use inc. freq hopping)
Operational Temperature
Control Cable
1.5-200 Watts PEP (3-500w PEP version also available)
80W (200w for 500w PEP version)
170 (165 TX, 5 RX)
50 ohms
Typically less than 2:1 when tuned, (3:1 max)
+10.0V to 18.5V DC, (+13.8 V DC nominal) 24V DC nominal also available on request
900 mA average
2 – 20 sec per channel
Typically less than 10 ms per channel
-35° to +70°C
Standard 50 ohn coaxial cable plus DC feed 3m in length

    Speak to one of our team

    Unsure about which SMC product is most suitable for your needs? Contact our subject matter experts today. They will be able to advise you on the best solution and whether a custom design is required.