Jim makes and then shows his tunable half wavelength dipole antenna. Using an antenna analyzer,
Jim finds the resonant frequency and the lowest SWR do not occur at the same frequency.
This high ruggedness device, MRF1K50H, is designed for use in high VSWR industrial, scientific and medical applications, as well as radio and VHF TV b... Read more
Automatic Low-Pass Filter The HBF 1000 is a high power low pass filter, it’s designed to be used with a transceiever or amplifier to reduce the... Read more
JVCKENWOOD Corporation (JVCKENWOOD) will release TS-590SG70, an HF/50 MHz special specification transceiver with the TRIO logo under the KENWOOD brand... Read more
On the 1st of December 2019, there was an extensive Sporadic-E opening on 144 MHz in the south-eastern part of Australia. While this allowed contacts... Read more
“On Sunday the 5th of August 2018, Mark Turner EI3KD managed to work D4Z on the Cape Verde Islands off the coast of of Africa on 144 MHz, a dist... Read more
Es’hail-2 Graham Shirville (G3VZV) & Dave Crump (G8GKQ) update us on Es’hail-2 and its amateur radio payload at the AMSAT-UK International S... Read more