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The HG3 QRO Mag Loop will be available for sale Jun 6th, 2021 

Technician Inspecting and calibrating the HG3 plus controller. Note the tuner and vacuum capacitor in the foreground ready for QC test.

On June 6th the order page on our website will go live. It will include the introductory price and we will accept orders. The HG3 plus QRO is a premium product made in the USA. It is meticulously hand crafted and built to order in Aurora, Oregon. Before shipping, each unit must pass a rigorous QC procedure. All components are assembled as a complete system (controller, cables, vacuum capacitor tuner and radiation loop). It then is calibrated and tested at maximum power and packaged for shipping.

The tuner enclosure is designed for outdoor deployment in a wide environmental range, but not in submersible conditions. These enclosures ensure internal electrical and electronic components are protected in harsh environment. Durability weatherproof enclosures are specifically designed to meet and exceed various NEMA and IP requirements, making them suitable for both indoor and outdoor applications. see https://www.polycase.com/waterproof-enclosures. It is the best housing we could find short of an expensive marine grade underwater nitrogen sealed enclosure. Further improvements in sealing the case is left to the user.  Many of you have more questions. The demo video and manual will answer most of your technical questions. Click below to watch the video and preview the manual.

Demo Video        User Manual


QST reviews HG3 Stepper Mag Loop!

ARRL Reviewed the HG3 Mag Loop Antenna in the Jan 2021 issue of QST. it gave it high marks for effectiveness, easy of use and precise repeatable operation. See the entire review here: QST HG3 review

The HG3 our flagship magnetic loop antenna, is now available for sale. The HG3  delivers unprecedented capability, performance and convenience. It employs a proven, accurate and repeatable stepper motor design.  Band selection, remote tuning, including optional loop rotation, is controlled by a microcontroller driving a high-resolution stepper motor.  An integrated digital SWR bridge allows auto-tuning based on an SWR scan. This ensures compatibility with most radios. Manual tuning uses a convenient rotary encoder knob – no more finicky push buttons. The four-line LCD shows the band selected, SWR, ERP, Cap value and more. Order the HG3 Stepper Mag Loop here.

73, Roger W1RMS


HG1 Expedition on SOTA field day

PreciseLOOP HG1 Expedition 
The PreciseLOOP antennas are for Receive and Transmit use. The new PreciseLOOP HG-1 is a high gain Magnetic Loop Antenna (MLA). It can be deployed quickly and is ideal for use in places where HOA restrictions make full size wire antennas impossible, or where there is not enough room to erect a conventional antenna. When designed and constructed properly, an MLA can perform as well or even better than a dipole antenna. The PreciseLOOP is compared to a commercial portable dipole antenna.


Test conducted in the field. Video MLA versus dipole

Comparing the Mag Loop to a dipole

New PreciseLOOP  Video

Check this video from Greg VA7BC

PreciseLOOP HG-1 Antenna

PreciseLOOP SOTA-1 Antenna

The Snows of Kilimanjaro… June 2018 CQ Magazine

PreciseRF QST half page 2018 v5 (2)