This is a antenna tuner with wide range tuning for antennas with a Z of + 50 Ohms on all the HF bands.
A Multiband Slinky Coil for the PAC-12 portable Antenna, can be used also as a dual PAC-12 dipole by James Bennett
QSO Procedure for Airplane Reflections, Reporting system and procedure, confirmation procedure and requirements for a complete QSO
PI-RX is a beacon monitoring program capable of decoding PI4 and showing the performance of the decoded signal
A popular free DX Cluster app for Android. It can be found on the Google play store. Mircules DX Cluster LITE is a FREE Android app that shows the info found on the international DX Cluster.
Software for Aircraft Scatter Prediction. Extend your capabilities on VHF-/UHF-SHF bands even when you live in an unprivileged location and Calculate a propagation path between two stations and follow the aircrafts in real time