DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Explore the world of Sleeve Dipole antennas on VU3DXR. This tag features technical guides on constructing high-performance vertical dipoles, often referred to as “flower pot” or “coaxial” dipoles. Learn how to build these omnidirectional antennas using simple RG58 or RG213 coaxial cable, including tips on adding RF chokes (baluns) to minimize common-mode currents for clearer VHF and UHF operation.
Master the construction of the high-performance Sleeve Dipole antenna using only coaxial cable. This technical deep-dive explains how the “sleeve” acts as a decoupling balun, providing a clean radiation pattern and low SWR for VHF/UHF and HF applications without external chokes
A simple and effective 2-meter ham band sleeve dipole antenna design using a ¼-wave whip and a ¼-wave aluminium sleeve over copper braid.
Build a compact dual-band FBK sleeve antenna for VHF/UHF bands from coax cable. Simple, efficient, and ideal for portable ham radio use.