Mobile NVIS Loop Antenna
Traditional vertical ‘whip’ antennas, fitted to vehicles for high-frequency communication, suffer from a ‘skip zone’. A “skip zone” is where little or no communication is obtainable in a given area.
The Hilomast, LLC Mobile HF Loop Antenna, developed for NVIS (Near Vertical Incidence Skywave) communication across 3-15MHz, overcomes these limitations by having high-radiation efficiency and no skip zone whatsoever.
Capable of automatically tuning across its frequency range in less than a 50th of a second, the Hilomast HF Loop Antenna compatible with virtually any HF transceiver including frequency-hopping types without the need for a separate control.
Based on the tested and reliable Hilomast, LLC Mobile NVIS Loop which is in use by organizations throughout the world, this latest version, the Mobile HF Loop Antenna, incorporates a significant upgrade to the durable and rugged, thick-walled, tubing for performance and durability.
Other versions are available for:
- Vehicle roof-bar fitment with a ‘fold-down’ facility
- Side-mounting on the vehicle.
The standard loop roof bar attachment is designed for roof bars 32mm x 22mm in cross section. However, attachments can be manufactured to meet your individual requirements.
Please feel free to contact Hilomast from our “Contact” page of this website, or call Hilomast, (386) 668-6784, and we will be glad to discuss details and/or options relating to your specific needs or on other competitive products in which we specialize.
|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||230 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|
|Coaxial Cable||RG58 5m in length|
|Power Cable||2 Core screened, 5m in length|
DOWNLOAD – Mobile NVIS Loop Series (PDF)