20 / 40 Meter Short Coil Loaded Dipole Antenna - Resource Detail - The DXZone.com
Coil-Shortened Dipole Antenna Calculator - Resource Detail - The DXZone.com
Effectively Reducing Monopole Antenna Length | DigiKey
DIY Shortened Vertical Antenna - 4X5MG
A loading coil for 80m – Dhakajack
Build A Shortened 40 Meter Vertical For POTA / SOTA Activations - Mike's Tech Blog WB8ERJ
End Fed Half Wave (EFHW) Antenna Upgrade Part 2 - The Loading Coil
472kHz.org
Antenna Loading Calculation
Loaded Quarter Wave Antenna Inductance Calculator – M0UKD – Amateur Radio Blog
80m mid-loaded vertical
MWA Antenna Handbook: chapter 2
How to Shorten a Vertical Antenna - YouTube
Adding a loading coil to a 40m Vertical for 80m operation | M0MCX - Amateur Radio - Ham Radio
A loading coil for 80m – Dhakajack
DIY Shortened Vertical Antenna - 4X5MG
antenna theory - Parameters needed to calculate inductor value to achieve proper phase delay? - Amateur Radio Stack Exchange
Small Space HF Antenna by Harry Lythall (SM0VPO)
Adding a loading coil to a 40m Vertical for 80m operation | M0MCX - Amateur Radio - Ham Radio
Coil-Shortened Dipole Antenna Calculator
