Build the Shorty Forty — a compact 7 MHz dipole using center-loaded coils to shrink a 40 m antenna to 25 ft while maintaining resonance and solid HF performance in limited space
Tag: shortened dipole
This tag features technical guides and DIY projects for building compact, space-saving HF antennas, such as the shortened 20m dipole and loaded dipoles for restricted spaces. Learn how to use inductive loading coils, calculate winding specifications, and tune your system for resonance to achieve high performance when a full-sized half-wave antenna isn’t an option.
Compact 40M HF Antennas: Short Dipoles & Short Verticals
Explore compact 40 m HF antennas including shortened dipoles and base-loaded verticals for space-limited ham radio setups. Practical designs enable effective 7 MHz operation in small yards, portable, or restricted installations
GM4JMU Shortened Dipole Antenna: Compact Performance for HF Bands
The GM4JMU shortened dipole uses loading coils to deliver full 40 m band performance in under 10 m span. Ideal compact HF antenna for small gardens, rooftops, and portable ham radio installations.