EFHW Antenna Kit - ARRL has partnered with HF Kits for this easy-to-build 4-band antenna kit... EFHW Assembly - EFHW Assembly Instructions ...
EFHW End-Fed Half-Wave Antenna Kit | Part One
EFHW End-Fed Half-Wave Antenna Kit | Part Two
Vertical Antenna Calculations
Ground Mounted Radial Length (ft) 234 divided by frequency in Mhz)
Ground Mounted Vertical Length (ft) 1/4 wave - 234 divided by frequency in Mhz) 1/2 wave - 420 divided by frequency in Mhz) 5/8 wave - 585 divided by frequency in Mhz) 3/4 wave - 702 divided by frequency in Mhz ) Full wave - 936 divided by frequency in Mhz) Calculator
