What is an antenna balun, why and when do you need it, type of transformers, impact on SWR and feed line efficiency.
A homemade tunable bandpass filter for all HF bands from 160m to 10m
A dipole antenna for 7 MHz support for this antenna is fiberglass military mast
An interesting article based on experience on homebrew end-fed antennas, relevance of antenna counterpoises, and usage of indoor end-fed antennas
Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
Gridmaker takes your ADIF-file and searches for all the grids on the specified band. It then makes files for use in DXAtlas
Building the W3NQN bandpass filters
5 Element Yagi with Conventional Driver, this little Yagi has a high F/B, which makes it quite useful as a contest stack.
An easy and cheap homemade moxon antenna for ham radio 70cm band
A review of the HF ham radio bands, considere by far the most popular bands in the amateur service. HF bands offer local QSOs and world-wide propagation are all possible at almost anytime with careful selection of the right frequency for the time of day, time of year, and current state of the sunspot cycle.