magnetic
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Antennas : Magnetic Loop- Magnetic Loop Antenna Builds and Autotuning Advancements
- Explore two magnetic loop antenna constructions, utilizing a 6-foot and a 12-foot square loop. Accompanied by a detailed description, the 6-foot loop features a built-in stepper motor control circuit, while the 12-foot loop incorporates a separate loop controller. Efficiency, tuning ranges, and the innovative autotuning solution using a microcontroller are discussed, offering insights into overcoming the antenna's narrowband limitations.
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- Mastering Magnetic Loop Antenna Control
- Unveil the secrets of efficient Magnetic Loop Antenna control systems, eliminating the hassle of frequent retuning. With real-time tracking and compatibility with various transceivers, including popular models from Elecraft, ICOM, Kenwood, and Yaesu, this controller ensures seamless frequency adjustment. Explore its high-resolution stepper motor and versatile communication capabilities, revolutionizing amateur radio operation.
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- Automatic Magnetic Antenna Tuner
- A Magnetic Loop Antenna is a resonant circuit employing a large inductor and adjustable capacitor. Efficiency depends on the inductor's size relative to wavelength. A Magnetic Loop Controller adjusts antenna tuning in real-time, syncing with Transceiver VFO movements. It communicates with various radios, enabling seamless tuning. Stepper motor resolution ensures accurate capacitor positioning, crucial for antenna performance. The Controller's firmware offers diverse functionality, enhancing user experience and antenna efficiency.
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- DIY EMC/RFI Mains Filter for a Clean Shack
- Utilizing snap-on ferrite cores and practical insights, the author enhances their shack's cleanliness against electromagnetic interference. With meticulous experimentation and installation, they improve noise levels across HF bands, reflecting on the effectiveness of their filter in minimizing common-mode disturbances. Updates underscore ongoing refinement and cautionary advice for optimal filtering and radio reception amid changing RF environments.
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