This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
LogHX is a freeware windows ham radio logger software, designed as complete Ham Radio environment. Radio control interface, online log book interfaces, cluster access, adif and cabrillo exports, antenna rotor control, Digital CW and SSB macros, full QSL management
The program consists of tabbed pages for various antenna and transmission line calculation. You can compute the values for an inverted L network that will allow you to match the 50 ohm output of the radio, or you can compute the necessary length in the units of choice for a 5/8 wave vertical for 10 meter band.
A simple accu keyer made with Arduino that works well with QRQ CW. Free to download arduino sketch and youtube video demonstration.
This article is about a 4 element yagi VHF antenna designed to be easy to be assembled and suited for portable operations
Amateur radio, commercial, two way handheld and mobile transceiver manufacturer produce VHF UHF analogn and digital DMR two-way radio
This project includes quite a number of useful testing features which were very useful when building other projects. Almost all the components used to construct this frequency counter were scrounged from old circuit boards and junk equipment.
Useful hints and tips on using the OQRS service. How to use the log search and check the OQRS Status, the band activity module explaoined, the real time log search feature and the whole OQRS process step by step
The high-frequency inductance of single-turn loops of various shapes made of round wire can be estimated accurately with a simplified formula
BKLog is a free windows amateur log book program. Developed in VB.NET, BKLog support several integrations, and provides many features. It can be used as contest log program, allow automatic sending of CW, full transceiver control, DX Cluster access, upload to most popular online Log QSL and QRZ services, like qrz,lotw,clublog,hrdlog.