Quarter wave vertical antenna
- About the basics of the quarter wave vertical and ground plane antennas that ares widely used for medium wave broadcasting, mobile radio communications applications and many more.
Repeater Range Android App
- M3OYQ’s Repeater Range is a free application designed to run on the Android mobile phone platform. The the app listens to the onboard GPS and displays the bundled repeater database as a simple list sorted by the range.
Beacons for Windows Mobile
- Beacons supports the HAM radio amateur to make use of the International Beacon Project. It helps fo figure out wich beacon is transmitting on wich frequence at any given time. The transmitting radio beacon is displayed on a world map together with a short description.
20m CW QRP Transceiver
- The direct-conversion receiver uses an audio-based automatic gain control, an LC tone filter, and a 100-kHz crystal for frequency alignment. The same VFO is used for transmitting and receiving by DC1YB