HF Bands

Understanding HF Operation

Dipole Antenna Calculator

WestMmountain Radio

Characteristics of the HF Radio Bands

DX Engineering

HF Operation

Hy Power Antennas

HF BandPlan

RadioWavz Antennas

Antennas and antenna modeling information

A Simple NVIS  Antenna


Alpha Delta Antennas

Baluns -What  they do and How they do it

Force 12 Antennas

Tarheel Antennas

GAP Antenna Products