An excellently presented article on the design and construction of a medium wave DX Antenna
The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
A multi band portable link dipole antenna for 20 30 and 40 meters band
This article is designed to be an introduction to the terms and basic mechanics of propagation methods that are to be found on the HF and VHF bands.
Homebrewing a Lightweight linked dipole HF antenna for portable SOTA operations
An introduction to Baluns, what they do and how to design efficinent baluns
Effects of ice an snow in a wire dipole antennas
The role played by hams intercepting enemy signals in WW2
The data modes have become particularly popular in recent years, with RTTY and PSK31 being heard almost every evening, particularly on 20 metres. So, now is a very good time to get started.
My LoTW is a free viewer app for Logbook of the World by ARRL. Features include, View all the QSOs you have submitted to LoTW, Add multiple callsigns under your LoTW account, View all your QSLs, Share digital QSL image which is created by the app for QSLs. Either save it on your device or share it on facebook, View statistics for your worked stations/DXCC/bands etc