Antennas by N6LF - Rudy's main site HERE

Vertical ground systems - an overview HERE

Moxon's alternate way to view vertical antennas HERE

Lazy H (TW) vertical for DX HERE

Radiation and ground loss resistance I HERE

Radiation and ground loss resistance II HERE

Radials how many? HERE

Radials for 160 how many? HERE

Shortened radials HERE

Shortened verticals for 160 HERE

Multiband verticals HERE

Radials with missing sectors HERE

Radials: ground vs elevated HERE

Elevated ground systems I HERE

Elevated ground systems II HERE

Experiments with different elevated radial configurations HERE

Ground system experiments HERE

Conductors for HF antennas HERE

Resistance in foil conductors HERE

Tree conductivity HERE

Soil parameters at HF HERE

Measuring soil resistance with low dipole. HERE