Aziloop DF-72™ Antenna System
A low noise VLF to HF multi-role receive antenna for local or remote deployment. This groundbreaking antenna offers dual-mode (K9AY/Loop) electronic rotatation using our Stepped-Azimuth™ technique for near-instant changes in direction.
Reception. Reinvented.™
Aziloop on its travels © IZ4UEZ
What is it?
Aziloop DF-72™ is a dual-mode multi-directional antenna system for VLF to HF reception with features unequalled at this price point (or possibly anywhere):
- Uses low visual impact, small footprint antenna comprising a pair of orthogonal loops plus an earth.
- Stepped-Azimuth™ technology for electronic rotation. The actual antenna remains stationary.
- Control everything from an intuitive Windows UI with selectable Local, Client or Server mode.
- Dual antenna modes. Switch between Loop mode and K9AY mode with mouse wheel or buttons.
- 108 antennas in one: 72 K9AY headings and 36 loop axes. Change with mouse in 60 ms.
- Switchable 18 dB preamp and a 4-step attenuator (0–18 dB) for up to 36 dB of level control.
- Four 7-pole preselection filters to give your receiver an easy time.
- Variable K9AY load. 250 Ω to 950 Ω in 50 Ω steps.
- Two control/monitor ports for your own use or allocate one or both to PTT muting.
- Headless remote control (no attached PC) via the controller’s built-in Ethernet server.
- Omni-Rig support for auto-filter, PTT muting and Rig-Sync (keep Rig A and Rig B in step).
The Common Interface Unit
The Common Interface Unit (CIU) is the control centre, managing all communications and coordination between the antenna and the Windows application.
Loop Control Unit
The Loop Control Unit (LCU) is where the magic happens.
Windows App
Over to you
Add a clean 13.8 V power supply, a Windows PC, and your own build of antenna, sized to give optimum performance for your use case and location.
Antenna
Optimum size depends on target frequency range, site noise, and system noise (single loop illustrated — a second identical one at 90 degrees completes the installation). Many antenna arrangements are possible, and the size and shape aren’t critical (within limits of course). All you need is a supply of 24/.2 (24 strand, 0.2 mm) insulated wire or similar, and a central non-metallic pole. You can use the standard K9AY shape and dimensions as a guide if you wish, or a scaled down version as below. Full antenna advice in the User Guide (see Downloads).
To find out more, see the Overview page or download the complete Aziloop User Guide.
Who should consider Aziloop?
Aziloop will be of interest to shortwave listeners, radio amateurs, and professional users alike. Applications include general monitoring, co-channel station resolution, basic direction finding, atmospheric and electromagnetic interference reduction, and jamming mitigation. Plus of course just having fun learning about propagation and discovering what your previous antenna was keeping from you.
Product Positioning
Aziloop has capabilities that single loop antennas cannot offer. Occupying a different market sector, Aziloop is an intelligent first choice, or a rewarding upgrade for the discerning listener.
Professional Users
Aziloop offers a feature-set that could meet your project requirements at a fraction of the expected cost, especially for tactical / SIGINT deployments. Custom builds may also be possible. Please contact us to discuss your needs.