1:49 UNUN using two stacked FT240-43 cores for end fed halfwave antenna. To match the end fed half wave antenna to the coaxial feeder, it is necessary to have a matching network or transmission line transformer.
Radio Frequency Interference (RFI) has always been a source of concern for the Radio Amateur. Until the recent introduction of complex circuitry in the home, our communications gear has been the main source of potential RFI. In this computerized age of ours, increasingly complex and sensitive receivers are being barraged by these and other sources of RFI.
Come learn why it is very difficult to predict propagation on the top band. Ionospheric Variability, Time Variations of Ionospheric Parameters, Atmospheric Gravity Waves, Ionospheric Absorption and The Role of Negative Ions.
Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like last Kp values and predicted Kp values.
Definition of the Robust Packet digital mode with sample sounds and description of main features. Includes references to software used to operate in this mode and frequencies to be used.
Download the Kenwood TS-590S and TS-590SG virtual port Driver for Windows 10/11 and Windows 8. This driver is also valid to control TS-990S, TS-890
HamAward is a cloud based amateur radio logbook allowing multi operators multi station activities, featuring real time cloud logging with live score counters. This online tool is addressed to support multi station award operations and management.
5V7RU DX Pedition to Togo online log search provided by clublog