Stop common-mode current when transmitting with an end-fed antenna. Unbalanced antennas are very prone to currents on the outside of the coax.
An interesting article about planning and testing beverage antennas for 80 and 160 meters in a rural location
Useful hints & tips on building a 10 and 17 meter Moxon Antenna
Amateur Radio World Prefix Map, custom great circle maps and more. Map printing service based in the UK
This circuit stores a morse code message as bits in an EPROM chip, the message controls a relay that keys a CW morse code transmitter. An Arduino processor can also be used in place of this circuit, that eliminates the need to build the circuit and program an EPROM.
An overview about the UHF connectors often referred to as the PL259 plug and SO239 socket used for many RF applications. Limitations, history and soldering properly UHF Connectors
This project involves the construction of a 5 Watt Morse code beacon transmitter that operates in the 28.200 to 28.300 section of the 10 Meter Amateur Radio band. The beacon controller uses an Arduino Uno microprocessor board to produce the three signals that control the transmitter.
Official web site of the CQ World Wide VHF Contest The contest promotes VHF activity on the 6 and 2 meter bands with participation from around the world.
DX Pedition RI0C to Iony Island AS-069 July 2017
